If you are looking for a great park in Tokyo, look no further! This park may not be as well known as the other parks in Tokyo but it certainly should be! It is one of the largest parks I have visited and, wow, what a great list of activities. This park was formerly the location of the Tachikawa air base (about 566 hectares - 5.66 million square meters!) This park is divided into a series of 5 zones (a, b, c, d and e). The main part of the park is approximately 1.7km by 2.3km.