Tokyo Dome (東京ドーム, Tōkyō Dōmu, TYO: 9681) is a 55,000-seat baseball stadium located in Bunkyō, Tokyo, Japan. Construction on the stadium began on May 16, 1985, and it opened for business on March 17, 1988. It was built on the site of the Velodrome, adjacent to the predecessor ballpark, Kōrakuen Stadium.