San Francisco’s new Transbay Transit Center, a 1.2-million-square-foot hub for four Bay Area counties’ bus systems plus intercity Greyhound buses (and light rail, too, eventually), officially opened on August 11 to huge crowds. I skipped the festivities but heard rave reports from friends who'd gone, and so on August 13 I took an AC Transit bus from Oakland to San Francisco to see it for myself. I was not disappointed. Indeed, I was elated by the light-filled Grand Hall, the clear signage, the well-integrated public art, the pristine restrooms (every fixture is touchless), and the astonishing 5.4-acre rooftop garden, officially called Salesforce Park. (The software company bought the naming rights to the park and transit center in 2017; the adjacent 1,070-foot-tall Salesforce Tower, which opened earlier this year, is the tallest building in San Francisco.)
During the eight years of construction, I’d frequently driven beneath a filigreed white overpass that marked one of the center’s boundaries. While researching the completed center I learned that the filigree’s distinctive pattern has a name: Penrose tiling. And it’s not merely some designer’s fanciful grace note: it’s a mathematical marvel discovered in the 1970s and defended in a famous lawsuit.
Filigreed Penrose tiling outside the new transit center.