The first time I saw images of Geisel Library, I thought it was a conceptual rendering of a 1950s space-age design. Turns out it is real—a fitting design for its namesake, Theodor Seuss Geisel (Dr. Seuss). Built in the late 1960s by William Pereira, it’s a bold, visionary work of modernist architecture that became iconic almost immediately. Geisel captures both Brutalism and mid-century futurism and remains deeply tied to the identity of UC San Diego. More than a building, it is a cultural landmark recognized worldwide for its striking presence, enduring significance, and imaginative spirit.