Ballparklopedia

Belluna Dome

ベルーナドーム

Saitama Seibu Lions

🇯🇵 JapanNPB · Pacific LeagueTokorozawa

One of the most unusual stadiums in professional baseball, Belluna Dome is a semi-outdoor domed stadium where home runs can literally fly out of the building — its roof covers the seating areas but leaves the outfield walls open to the outside air.

Satellite aerial view of Belluna Dome

Aerial view · Google Maps

Stadium Stats

Capacity

31,552

Year Opened

1979

League

Pacific League

Country

Japan

Did You Know?

  • Belluna Dome has an open structure unlike any other: the dome roof covers the grandstand but the outfield is open, meaning balls can leave the stadium entirely on long home runs.

  • The park is nestled in the wooded hills of Tokorozawa, Saitama, giving it a forested, almost rustic setting unusual for a professional sports venue.

  • The Seibu Lions won eight consecutive Pacific League pennants from 1982 to 1992 — one of the greatest dynasties in NPB history.