National Sumo Stadium / 両国国技館
Sumo wrestling is an ancient Japanese martial art.
Edo-Tokyo Museum / 江戸東京博物館
It looks like some quadruped animal. Its appearance of elevated wearhouse is very charactaristic. It is designed based on Shosoin / 正倉院 in Yayoi period / 弥生時代 around the 3rd century BC. Today, a similar building structure can be seen in the Shinto shrine such as the main buiding or the hall of worship.
A lot of exhibitions show you vividly illustrated townscapes in Edo and the past of Tokyo through many models, miniature towns and figurines.