Judd Foundation

Enter this five-story, cast-iron building from 1870 for a fascinating glimpse into the life of the late American artist Donald Judd. The minimalist maverick's former home and studio, which he bought in 1968 for a now-unthinkable $68,000, is more art installation than crash pad, with modern works by Dan Flavin, Marcel Duchamp, Frank Stella and more on every floor. Guided tours run for roughly 90 minutes and must be booked online (tours often sell out a month in advance).