Geihinkan

Not to be confused with the palatial state guesthouse found in Akasaka, this Geihinkan is actually a love hotel – albeit one of the most ostentatiously decorated love hotels you'll ever see. The themed suites are designed to resemble everything from a Chinese courtesan's love nest to a Rococo maisonette, with bathrooms that are every bit as showy as the bedrooms themselves (just watch out: those Romanesque tubs are awfully slippery). Licensing restrictions forbid the owners from refurbishing the premises, meaning that the Showa-era hotel is now in a state of graceful decay – catch it while it's still there.