This postmodern masterpiece, the work of Uruguay-born American architect Raphael Viñoly, is the first major convention and art center of its kind in Tokyo. Viñoly's design was selected in a 1989 competition that drew nearly 400 entries from 50 countries. The plaza of the Forum is that rarest of Tokyo rarities: civilized open space. There's a long central courtyard with comfortable benches shaded by trees, the setting for an antiques flea market the first and third Sunday of each month. The Forum itself is actually two buildings. Transit fans should take a stroll up the catwalks to the top, which concludes with a view of the Tokyo Station JR lines.