The California sun casts long shadows across the tile-roofed arcades as I step through the campus gates, and for the hundredth time this semester, I’m struck by the realization that I study in a place designed like a dream. Here at Caltech, where brilliant minds dissect the universe’s secrets, the buildings themselves whisper stories—some a century old, others boldly modern—all harmonizing in an architectural symphony. Every walk feels like time travel, and although most of the time it feels like running around from one class to the other, sometimes we should pause and stare up at the columns and elegant features of our campus.
A Vision Born in 1917
When astronomer George Ellery Hale hired architect Bertram Goodhue in 1917 to design Caltech’s 22-acre campus, he wasn’t just commissioning buildings—he was orchestrating an environment where science and beauty would dance together. Goodhue understood something profound: that Spanish mission architecture, with its shaded portals, sheltering walls, and reflective water features, could create spaces where “aesthetic values of life” flourished alongside scientific inquiry (“Learn All About Caltech’s Historic Architecture on This Tour”, Pasadena Mag).
Walking through campus, I feel this philosophy in my bones. The arcades aren’t just pretty—they’re functional poetry, offering respite from the Pasadena heat while creating those magical in-between spaces where you bump into classmates and suddenly find yourself deep in conversation about quantum mechanics or, just as often, weekend plans (“Caltech’s Timeless Design: A Walking Tour Through Architectural Integrity”, Pasadena Now).
The Athenaeum: Where Einstein Walked
My favorite building has to be the Athenaeum. Designed by Gordon Kaufmann in the Mediterranean Revival style and completed in 1930, this faculty club isn’t just gorgeous—it’s hallowed ground. Albert Einstein himself stayed in the loggia during his winter visits to Caltech from 1931 to 1933.
Sometimes, when I’m studying nearby, I imagine him pacing those same tiles, pondering relativity while California citrus trees perfumed the air. The building has hosted over 18,000 visitors on architectural tours over the past 31 years, and I understand why—its elegant arches and intimate courtyards make intellectual greatness feel touchable, human.
The Athenaeum functions as both a social and intellectual hub for Caltech faculty, students, and distinguished visitors. Its named suites—including the Einstein Suite—remind us that this building isn’t a museum; it’s a living space where history continues to unfold. I’ve attended lectures in its halls, grabbed lunch between labs, and each time, the architecture itself seems to encourage deeper thinking.
Beckman Institute
The Beckman Institute stands as a testament to how Caltech honors both tradition and innovation. Founded in 1986 through a generous $50 million gift from Arnold Orville Beckman and his wife Mabel, the building was designed by architect Albert C. Martin Jr. in Spanish style, featuring four levels of laboratory space arranged around a central courtyard and reflecting pool.
I remember the first time I approached it—the way the building’s warm terracotta tiles seemed to glow in the afternoon light, how the pool’s surface mirrored both sky and architecture, creating a doubling effect that felt almost metaphysical. Inside, world-changing research in chemical and biological sciences happens daily, yet the architecture never lets you forget you’re in Southern California, where science and sunlight are old friends.
The reflecting pool isn’t just decorative—it’s transformative. On stressful days, I’ve sat on the edge during lunch breaks, watching clouds drift across its surface, and felt my thinking slow down, become more deliberate. Great architecture gives you permission to breathe, and there is the DNA inside!
Beckman Auditorium: The Crown Jewel
If I had to choose one building that makes my heart skip, it’s Beckman Auditorium. Designed by Edward Durrell Stone and funded by the Beckmans, this circular white stone concert hall opened with a gala on February 25, 1964, and was immediately praised for its acoustics
The first time I attended a concert there, I understood why. The building’s round shape creates this cocoon effect—you’re held inside sound itself. And from outside? It’s otherworldly, especially at sunset when the white stone seems to pulse with pink and orange light. It marked Caltech’s expansion in the 1960s, signaling that this institution valued not just laboratories, but spaces for human connection through art and music.
Walking past Beckman at night, backlit and glowing like a UFO, I’m reminded that Caltech understands education holistically. We’re not just training scientists—we’re cultivating human beings who need beauty, music, and wonder as much as we need equations and experiments.
The Millikan Monolith: Caltech Hall
Then there’s Caltech Hall—formerly it was called Millikan Library—the tallest building on campus, completed in 1967. I’ll be honest: this nine-story brutalist tower divides opinion among students. Some find it imposing, even cold. But I’ve come to love how it punctuates the skyline, a bold vertical statement amid all those horizontal Spanish tiles.
There’s something humbling about studying in its shadow, knowing the building was designed to symbolize “the towering stature” of physicist Robert Millikan in science and Caltech’s development (“The Millikan Monolith to Rise”, Caltech Archives). The building was renamed in 2021, but its architectural significance remains—a monument to ambition, reaching skyward like our research aspirations.
Where Biology Comes Alive: A Student’s Journey Through the Life Sciences
As a biology major, my relationship with Caltech’s campus is intimate and specific. I don’t just walk through these buildings—I live in them, sometimes literally until 3 a.m. when an experiment demands attention. The Division of Biology and Biological Engineering spans seven buildings on campus, each with its own personality, its own story to tell about how architecture shapes science.
Kerckhoff: Where It All Began
The William G. Kerckhoff Laboratories of the Biological Sciences, built in phases starting in 1928, is where I took my first biology lab–there’s something grounding about pipetting solutions in a building that’s been home to biological discovery for nearly a century. The old tile floors, the way afternoon light slants through windows designed before air conditioning was standard—it all reminds me that science is a conversation across time. Named for William G. Kerckhoff, this building has seen generations of breakthroughs, and walking its halls, you feel the weight of that legacy without it crushing you.
The Broad Center: A Bridge to the Future
But if Kerckhoff is our foundation, the Broad Center for the Biological Sciences is our cathedral. Completed in 2002 and designed by James Ingo Freed of Pei Cobb Freed & Partners—the same architect behind the U.S. Holocaust Memorial Museum—this five-story, 120,000-square-foot building changed everything for biology at Caltech.
The building was “conceived as a bridge as well as a destination,” and you feel that dual purpose the moment you enter. Located northwest of the Beckman Institute, it was the first of approximately ten buildings forming Caltech’s North Campus expansion. What makes Broad special isn’t just the cutting-edge facilities—the experimental MRI suite, the high-resolution X-ray diffraction facility, the electronic diffraction facility, and the vivarium. It’s how the building creates community.
A circulation spine penetrates the building along both axes, inviting entry from all four sides and connecting you to a café, lounges, and an auditorium. The design also connects visitors to important outdoor spaces including the Great Lawn and the Oak Courtyard. I’ve had more breakthrough conversations in Broad’s lounges than in formal meetings. There’s something about grabbing coffee, seeing someone’s poster presentation, and suddenly realizing your protein folding problem relates to their genomics work. The architecture makes you bump into each other—and in science, those collisions spark innovation.
President David Baltimore said at its opening: “The Broad Center adds a distinguished architectural achievement to Caltech’s already beautiful campus. It is a testament to our commitment to excellence”. The building manages to respect the established character of Southern California architecture while housing the future of biological research—no small feat.
The flexibility was intentional. The building houses generic laboratories and support spaces designed to accommodate every type of biological research, adaptable to constantly evolving scientific methods and technologies. As methods change, as new technologies emerge, Broad Center evolves with them. That’s architectural foresight.
The Chen Neuroscience Research Building: Light and Mind
Then came the game-changer: The Tianqiao and Chrissy Chen Neuroscience Research Building, open in January 2021. This three-story, 150,000-square-foot facility with its gleaming copper exterior fundamentally transformed how we think about neuroscience at Caltech.
Walking toward Chen from Del Mar Boulevard, you can’t miss it. The building establishes a new entrance to campus at the corner of Wilson Avenue and Del Mar, and its floor-to-ceiling windows literally make science visible. As President Thomas F. Rosenbaum said at the dedication, the building has “state-of-the-art laboratories but also very human gathering spaces, skylights and gardens where serendipitous scientific encounters can launch new collaborations and reveal unexpected research directions.”
I remember my first time inside—the bright, open spaces flooded with natural light, the 150-seat lecture hall where I heard talks that bent my understanding of consciousness. The building houses research and teaching labs, a neurotechnology lab, and crucially, provides a physical home for Caltech’s neuroscience community, which spans nearly every division on campus.
David Anderson, director of the Chen Institute, explained the building’s purpose perfectly: “We have a vibrant community of neuroscientists from across the entire spectrum of scientific disciplines. Now our institute without walls finally has a physical home.” The building doesn’t just house equipment—it amplifies collaboration between neuroscientists, genomics researchers, systems biologists, and AI specialists. By bringing these researchers together in shared physical spaces, the building enables the kind of interdisciplinary discovery that defines Caltech’s approach.
The Chen Building’s design was inspired by biology and neuroscience itself. The Hensel Phelps and SmithGroup design and build team “worked through many iterations of laboratory design concepts” with inspiration drawn from the very fields the building serves. It features shared lab spaces and centralized hubs where neuroscientists, biologists, chemists, physicists, engineers, and computer scientists converge.
The building will consume nearly 30% less energy than a typical lab building and features native, drought-resistant vegetation. Walking through its light-filled atrium, you understand that the Chens’ vision—pursuing fundamental principles of how the brain works to create new treatments and imagine a future where the human brain itself could be enhanced—found its perfect architectural expression.
The story of how the Chen Institute came to be is itself inspiring. Tianqiao Chen and his wife Chrissy Luo happened upon a TV news report about research being done by Richard Andersen, in which a person controlled a robotic arm using only their mind. That moment of inspiration led them to create their own Chen Institute for Neuroscience, then the Tianqiao and Chrissy Chen Institute for Neuroscience at Caltech in 2016, which allowed researchers to jumpstart new projects while the physical building was under construction.
The Resnick Sustainability Center: Our Newest Marvel
And now, just completed, stands the building that makes my heart race every time I pass it: the Resnick Sustainability Center. Designed by the Yazdani Studio of CannonDesign and achieving LEED Platinum certification, this 80,000-square-foot mass timber building is essentially “a makerspace for scientists”.
The first thing that hits you is that undulating glass façade. The design concept is brilliant: flexible research labs at the building’s core wrapped in “an undulating transparent skin of tilted and curving glass, creating a light-filled atrium for collaboration and innovation”. The glass panel is cold-warped and twisted to match the building’s complex geometry. It’s not just beautiful—it’s intentional. Natural light spills into the central atrium, and solar shading fins reduce heat gain.
Inside feels like being in a treehouse—lofty floors connected by open stairs, with public spaces on each level. The building houses a biosphere engineering facility, a solar science and catalysis center, a remote sensing center, translational science labs, and undergraduate teaching spaces. Every Caltech freshman will have at least one class here—a deliberate choice emphasizing “how integral sustainability is to all the areas of discipline they will encounter throughout their education”
The Resnick Sustainability Center will unite experts from across physical sciences, life sciences, and engineering disciplines in shared spaces with access to unparalleled instrumentation to advance novel solutions that extend beyond any single disciplin. It’s a modern, flexible, high-performance research building capable of supporting and expanding the research work of the Resnick Sustainability Institute
Jonas Peters, Resnick Sustainability Institute Director, described Caltech’s approach: “We are building an institute that really tries to pull, essentially, all of the campus toward problems in sustainability. We need all hands on deck.”The building’s transparent design puts science on display—walking past at night, you see researchers at work, backlit by that luminous glass, and it reminds you that solving climate change isn’t abstract. It’s happening right here, right now, in spaces designed to inspire bold thinking.
The building is essentially a concrete structure designed for the restrictive vibration criterion needed for the research, but the public atrium and organic forms created by the glass facade give it a light, open feeling. Design principal Mehrdad Yazdani of the Yazdani Studio explained that “bringing every Caltech student into this space puts an emphasis on how integral sustainability is to all of the areas of discipline they will encounter throughout their education at Caltech”
The Resnick Center replaced the Mead Memorial Undergraduate Chemistry Laboratory, which was demolished in 2021. It’s bittersweet—saying goodbye to old spaces that served us well—but the Resnick building represents something essential: Caltech’s commitment to confronting the defining challenge of our generation with architecture that embodies possibility rather than fear.
The Daily Experience: Architecture as Teacher
Here’s what the architecture guides don’t tell you: what it feels like to rush between Chen and Broad with ten minutes before a presentation, California sun warming your face as you pass under modern arcades that echo Goodhue’s century-old designs. Or how, exhausted at 2 a.m. in a Broad Center lab, you look up through those enormous windows and see fellow students working in Chen across the way, and suddenly feel less alone.
The biology buildings—old Kerckhoff with its historical weight, Broad with its community-building spine, Chen with its light-flooded neuroscience labs, and now Resnick with its climate-conscious glass curves—create an ecosystem for learning that goes beyond textbooks. They teach you that science happens in conversation, that breakthroughs come from unexpected encounters, that solving hard problems requires spaces designed for both intense focus and spontaneous collaboration.
I’ve learned as much from the architecture as from my professors. Broad’s circulation spine taught me that the path between destinations matters as much as the destinations themselves. Chen’s transparent walls showed me that making science visible to the world isn’t just about communication—it’s about accountability and invitation. Resnick’s undulating glass reminds me daily that addressing climate change requires beauty and boldness in equal measure.
The South Houses: Where History Lives
Living in the South Houses—Blacker, Dabney, Fleming, and Ricketts—means inhabiting history. Built in 1931 in Mediterranean style and partially renovated in 2006, these undergraduate residences embody everything Goodhue envisioned about shaded courtyards and community spaces.
Late at night, when problem sets have broken our brains, we gather in these courtyards where generations of Caltech students have gathered before us. The tile fountains burble, the arches frame star-filled skies, and someone inevitably pulls out a guitar. In these moments, the architecture does what great architecture always does—it creates the stage for human life to unfold.
These houses are named after Robert R. Blacker, Joseph B. Dabney, Arthur H. Fleming, and L.D. Ricketts—all significant figures in Caltech’s history. Living in spaces named for people who believed in the Institute’s mission connects you to that legacy. The houses are affiliated with Caltech’s unique undergraduate house system, which creates tight-knit communities within the larger campus.
A Campus That Survived and Evolved
Caltech’s buildings have weathered challenges. The 1971 San Fernando earthquake damaged historic structures like Throop Hall and Culbertson Auditorium. When engineers recommended demolition, they discovered something remarkable: far more reinforcing rebar than required, embedded in that century-old concrete. A large wrecking ball was used to demolish Throop Hall, and smashing the concrete revealed massive amounts of rebar, far exceeding safety requirements. The rebar had to be cut up before the pieces could be hauled away, and the process took much longer than expected. Even in destruction, the buildings revealed the strength of their builders’ vision.
The campus keeps evolving. The oldest existing building, Parsons-Gates Hall of Administration (originally Gates Laboratory of Chemistry), dates to 1917—the first to cross the hundred-year threshold. It was damaged in the 1971 earthquake and rebuilt in 1983 as the Parsons-Gates Hall of Administration. New structures like the Cahill Center for Astronomy and Astrophysics and the Walter and Leonore Annenberg Center for Information Science and Technology opened in 2009 In 2010, Caltech completed a 1.3 MW solar array projected to produce approximately 1.6 GWh annually. We’re building the future while honoring the past.
The Guggenheim Legacy
Walking past the Guggenheim Aeronautical Laboratory—where rocket research began in 1936 under Theodore von Kármán’s leadership, ultimately leading to the establishment of the Jet Propulsion Laboratory in 1943 —I’m reminded that every building on this campus connects to something larger. The Guggenheim was the first—and from 1936 to 1940, the only—university-based rocket research center. That pioneering spirit lives in our architecture, in how buildings like Resnick continue pushing boundaries.
Why It Matters
As I write this, sitting in a study nook in the Resnick Sustainability Center’s atrium, watching that twisted glass catch the afternoon sun, I’m surrounded by the architectural evolution of scientific ambition. From Gates Laboratory’s 1917 Spanish tiles to Resnick’s 2024 sustainable timber and glass, every building tells the same story: that great science needs spaces worthy of great minds.
Caltech’s architecture created an environment designed to “foster an awareness of the aesthetic values of life alongside scientific inquiry” For those of us in biology, this means our labs aren’t sterile boxes but parts of a larger conversation—between disciplines, between past and present, between human creativity and natural beauty.
The Caltech History & Architectural Tour Service (CHATS), founded in 1985 as a community service by the Caltech Women’s Club, has been sharing these stories for decades, with over 18,000 visitors experiencing the campus in the past 31 years. Docent Judi Cowell explains that “the tour offers local residents and visitors an opportunity to experience the history and architecture of Caltech’s campus that has been designed to attract and inspire some of the world’s brightest minds”
But for those of us who study here, the architecture isn’t a tour—it’s the stage where our lives unfold, where late-night breakthroughs happen, where friendships form over coffee in Broad’s café, where the future of sustainability research glows through Resnick’s curved glass walls, where we contemplate consciousness in Chen’s light-filled spaces.
The tour shares “the beauty and architecture of the campus woven together by renowned architects such as Bertram Goodhue, Gordon Kaufman, AC Martin, Thom Mayne, Frederick Fisher, [Edward Durrell] Stone, I.M. Pei, Henry Cobb, James Freed, and many more”. Each architect brought their vision, yet somehow the campus maintains coherence—a conversation across decades about what it means to create space for discovery.
A Living Campus
Every day, walking between classes, passing from Spanish Revival courtyards into cutting-edge glass atriums, from the historic Kerckhoff labs to the brand-new Resnick Center, I’m reminded that Caltech understood something profound: that the buildings where we work shape the work we do. They whisper that science needs beauty, that solving climate change and understanding consciousness require spaces that inspire as much as they facilitate.
The campus also includes lighter touches—sculptures that depict the science within buildings, like the 1924 Douglas Cruisers that circumnavigated the world. The tour even shares “the rich history of Caltech pranks and humor, including a scavenger hunt to find architectural features that have been creatively integrated into buildings across the campus”. This playfulness is as much a part of Caltech’s architectural identity as the serious Spanish Revival formality.
And on the best days—when California light turns everything golden, when you’ve just had a breakthrough in the lab, when you look up from your bench in Broad and see through the windows to Chen’s copper exterior glowing in the sunset, with Resnick’s undulating glass catching fire in the distance—you feel impossibly grateful to call this place home. Not just because of the Nobel laureates or the JPL connection or the world-class research, but because someone, a century ago, decided that scientists deserve to work in spaces that feed the soul as much as the mind.
That decision echoes through every arch, every courtyard, every light-filled atrium, every reflecting pool. It resonates in the way Broad’s circulation spine encourages chance encounters, in how Chen’s transparent walls demystify neuroscience for passersby, in how Resnick’s mass timber and glass embody the sustainable future we’re trying to build. And it makes all the difference.
Note: Monthly campus architectural tours are typically offered on the fourth Thursday of each month (except June-August and December) by CHATS (Caltech History & Architectural Tour Service). For more information, visit chats.caltech.edu.
