Inside the Former ‘Underworld’ Where Ai Weiwei Makes Art

For part of the year, the artist and activist Ai Weiwei works in a cavernous 30,000-square-foot studio on the underground levels of a former 19th-century brewery in Berlin. Its triple-height vaulted cellars, which Ai, a self-taught architect, renovated himself after leaving his native China in 2015, are now pristine and well-lit, but when he first visited the long-abandoned subterranean space, it was “completely dark,” he says, “like an underworld.” In that way, it recalls the…