Space Plaza? Oasis 21!

In the heart of Nagoya's bustling Sakae district, Oasis 21 is as striking a piece of architecture as you'll find anywhere in Japan. Nominally a bus terminal, it's also a shopping center, event space - there's a weekly Saturday morning organic market, for one - rendezvous point and tourist attraction. The rooftop 'Spaceship Aqua' overlooks tree-lined avenue Central Park and the pleasant Field of Green, and also has a fine view of the city's TV Tower, reflected in the rippling water.