Built in an attempt to revitalize Osaka's Kita district, the project wasn't quite the commercial success that was anticipated but this bizarrely shaped 40-story, 173-meter building is still a city landmark. Take the escalator through midair to the rooftop observatory for an open-air view of Osaka, which is particularly impressive on a clear night. There is a lover's seat, where if you hold your partner's hand, and each hold a metal button on the seat, the ground around you lights up.