Finished in 1929, the magnificent Edificio Bacardí is a triumph of art deco architecture with a whole host of lavish finishings that somehow manage to make kitsch look cool. Hemmed in by other buildings, it's hard to get a full kaleidoscopic view of the structure from street level, though the opulent bell tower can be glimpsed from all over Havana.
There's a bar in the lobby, and for CUC$1 you can travel up to the tower for an eagle's-eye view.