There's "always something to spark the mind" at this SoMa museum, starting with the Mario Botta–designed building, a "fantastically lit, striped granite" "work of modern art in itself", complete with a top-floor "see-through catwalk"; a "diverse permanent collection", "outstanding traveling exhibits", an "excellent cafeteria" and a "cool gift shop" are among its other "gems"; N.B. admission is free on the first Tuesday of each month.