Tokyo Stadium(東京スタジアム,Tōkyō Sutajiamu?) is a multi-purpose stadium in Chōfu, Tokyo, Japan. The stadium was founded at Kantō Mura, the redevelopment area formerly used by United States Forces Japan, in March 2001. It was the first stadium in Japan that offered its naming rights, which were sold to Ajinomoto Co., Inc. with a 5-year 1.2 billion yen (about 10 million U.S. dollars) contract, from March 2003 to February 2008. This contract was renewed on November 2007 and extended by 6 years for 1.4 billion yen to February 2014. As a result, it is now named Ajinomoto Stadium(味の素スタジアム,Ajinomoto Sutajiamu?).
The stand accommodates 50,100 and is divided into two levels; the upper level accommodates 20,600 and the lower level 29,370 (both are all-seated). On each level, the stand is divided into four sections (main, back, north and south sides).
The whole of the upper level, as well as upper tiers of the lower level, is covered by roof, which is made of Teflon (main and back) and polycarbonate (both sides). The main stand houses media and hospitality boxes, VIP rooms and reception hall. Two large LED displays are installed at both sides.
The ground was originally designed for both athletics and football games. However, the construction of the supplementary ground, which is needed for compliance with 1st-grade athletic grounds in Japan, has been postponed. The management company has decided to use the ground mainly for football, and not to install a running track until the supplementary pitch has been added. Currently artificial turf is laid down all over the ground except the football field area, over which natural turf is spread. Consequently, there is some room between the football pitch and the stand.
In order to comply with height limitation close to the airport, the pitch is sunk below the level of the land around the stadium.