The Olympic Hockey arena was inside the Olympic park and was the main Hockey arena where all the events were held. It used in the Summer 2012 Olympics and was used as the venue for 7-a-side football and 5-a-side football in the Paralympics summer events. It was a two pitch complex and had a capacity of 15,000 seats in the main arena and 5,000 in the smaller arena. It was £19,000,000 cost to build and was a unique structure. This stadium will be used as a training ground for Leyton Orient FC. It also may hold the 2015 hockey world cup. The stadium will be converted into a smaller capacity of 5,000 seats after the Olympics.