This excellent museum is devoted to the history of Tokyo, formerly known as Edo. Entering the museum via escalator from the third-floor plaza below is an inspiring experience - the massive structure seems to hover several stories over the plaza like some giant spaceship.
The voluminous interior is just as dramatic - one enters the main exhibit area after crossing a life-size replica of Nihonbashi Bridge. Exhibits include lots of giant dioramas, and full-size recreated settings that illustrate life in the capital from around 250 years ago through the 1950s. There are also a couple of areas for temporary exhibits (including one down on ground level), two cafe-restaurants, and a big gift shop.
The building, completed in 1993, was designed by architect Kiyonori Kikutake, a founder of the Japanese Metabolist group.