Tokiwa Twin Towers were built in Nishitama-shi city. The towers were commissioned by the president of the Tokiwa company: Mio Tokiwa. The architectural design of the towers was entrusted to the architect Hideiko Kazama. The towers have different heights and numbers of floors. Tower A is 319 (75 stories) high and contains mainly commercial offices and from the 31st floor upwards they are all owned by Tokiwa corporation. The tower also has a panoramic lift that stops at each floor but can only be called from the 66th floor (concert hall) and from the 75th floor (reception hall). Tower B is 294 meters high (69 floors). It is a predominantly commercial tower, with shops on the lower floors and hotel rooms on the higher floors. An Olympic-sized swimming pool covered by a dome has been built in the attic, which can be opened and closed according to the season. The towers are connected by two bridges located on the 45th floor and 60th floor.