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Belluna Dome

Home of the Saitama Seibu Lions

Photo: Russel Tiffin (IG: @npb.stadiums.tour)

Photo: Russel Tiffin (IG: @npb.stadiums.tour)

Also Known As: Seibu Dome (

Opened in: 1979

Stadium Capacity: 32,725

Dimensions: LF & RF: 100 m (328 ft) / CF: 122 m (400 ft)

Description: The stadium was originally built without a top, but was given a facelift before the 1999 season. Unlike other domes, it does not have outer walls and has a unique view of the surrounding forest. That being said, the roof protects the field from the outer elements, but the lack of walls exposes the fans to rain, wind, and worst of all, the humidity of the Japanese summer. Many find this completely unbearable when the temperature gets too hot or cold. 

Traditionalists will appreciate that the Belluna Dome (known as the MetLife dome from 2017-2021) is the last remaining NPB ballpark to still have a live organist to entertain fans. Attendance is below league average, probably in part due to the ballpark’s location in Tokorozawa, which does not facilitate its Tokyo-working fans to get to weekday games in time.


Access: There are a variety of ways to get to this ballpark from Central Tokyo…and none of them are simple.

Here’s the way we’ve found to be the least troublesome:

Make your way to JR Ikebukuro Station. From JR Ikebukuro Station take a short walk while inside the building to the Seibu Line, a private railway, at Seibu Ikebukuro Station.

From Seibu Ikebukuro Station you want to end up at Seibu Kyujo-mae, the stadium station. To do so, depart Seibu Ikebukuro Station on the Seibu Ikebukuro Line toward Nishi-Tokorozawa.

Get off at Nishi-Tokorozawa (not be be confused with Tokorozawa).

At Nishi-Tokorozawa transfer to the Seibu Sayama Line and its train to Seibu Kyujo-mae, the stadium station.

Stadium Photos

Stadium Tickets

Team and Stadium Address:
Saitama Seibu Lions
Address: 2135 Kami-Yamaguchi
Tokarazawa-shi, Saitama-ken 359-1189
Phone: 0570-01-1950