Tokyo Dome is a 55,000-seat stadium (actual capacity: 42,000 seats) located in Bunkyo Ward of Tokyo, Japan. It is the home field of the Yomiuri Giants baseball team, and has also hosted basketball, American football and association football games, as well as puroresu (pro-wrestling) matches, Mixed Martial Arts events, K-1 Kickboxing events, monster truck races, and music concerts. It is also the location of the Japanese Baseball Hall of Fame which chronicles the history of baseball in Japan. Its dome-shaped roof is an air-supported structure, a flexible membrane held up by slightly pressurizing the inside of the stadium.
Tokyo Dome's original nickname was "The Big Egg", with some calling it the "Tokyo Egg Dome". However, the nickname gradually fell from use as the years went on, and is nowadays rarely heard. It opened for business on March 17, 1988 and was built close to the site of its predecessor, Kourakuen Stadium. Like Kourakuen, the Dome hosts the Toei Superheroes live shows of the year.
Tokyo Dome is part of a greater entertainment complex known as Tokyo Dome City. Tokyo Dome City includes an amusement park and Tokyo Dome City Attractions (formerly Kourakuen Grounds). This amusement park occupies the former Korakuen Stadium site and includes a roller coaster named Thunder Dolphin and a hubless Ferris wheel. The grounds also have an onsen called Spa LaQua, various shops, restaurants, video game centers, the largest JRA WINS horse race betting complex in Tokyo, and Oft Korakuen, which caters to rural horse races.