{{Short description|Baseball stadium in Saitama, Japan}} {{Infobox venue | name = Belluna Dome | nickname = | logo_image = Seibu-Dome-Logo.svg | logo_size = 300px | image = 300px|Seibu Dome | fullname = Belluna Dome | location = 2135 Kami-Yamaguchi, Tokorozawa City, Saitama, Japan | coordinates = {{coord|35|46|6.6|N|139|25|13.80|E|region:JP_type:landmark|display=inline,title}} | broke_ground = July 1, 1978 | built = March 31, 1979 | opened = April 14, 1979 | renovated = 2007–2008 | expanded = July 7, 1997–March 18, 1999 (roof construction) | closed = | public_transit = 15px '''Seibu Railway:''' <br /> 15px Sayama Line and 15px Yamaguchi Line at {{STN|Seibukyūjō-mae|x}} | demolished = | owner = Seibu Railway Company, Ltd | operator = Saitama Seibu Lions | surface = Artificial | construction_cost = | architect = Yoshiro Ikehara (Stadium)<br />Kajima Construction Corporation, Ltd. (roof construction) | structural_engineer = | services_engineer = | general_contractor = Seibu Constructions (Stadium)<br />Kajima Construction Corporation, Ltd. (roof construction) | project_manager = | main_contractors = | former_names = Seibu Lions Stadium (1979–1997)<br />Seibu Dome (1998–2004, 2008–2015)<br />Invoice Seibu Dome (2005–2006)<br />Goodwill Dome (2007)<br />Seibu Prince Dome (2015–2017)<br />MetLife Dome (2017–2022) | tenants = Saitama Seibu Lions (1979–present) | website = https://bellunadome.seibulions.co.jp/ | seating_capacity = 31,552<ref>{{cite web | url=https://www.seibulions.jp/stadium/dome.html | title=ベルーナドーム概要｜埼玉西武ライオンズ }}</ref> | dimensions = Left field: 100&nbsp;m (328.1&nbsp;ft)<br />Center field: 122&nbsp;m (400.3&nbsp;ft)<br />Right field: 100&nbsp;m (328.1&nbsp;ft)<br />Outfield fence height: 3.2&nbsp;m (10.5&nbsp;ft){{Spaced ndash}}4.37&nbsp;m (14.3&nbsp;ft) }} {{nihongo|'''Belluna Dome'''|ベルーナドーム|Berūna Dōmu}} (also named {{Nihongo|'''Seibu Dome'''|西武ドーム|Seibu Dōmu}}) is a baseball stadium located in Tokorozawa, Saitama, Japan.<ref>[http://www.seibu-group.co.jp/railways/tourist/english/info/seibuen.html Seibu Railway Tourist Guide] {{webarchive|url=https://web.archive.org/web/20070804073039/http://www.seibu-group.co.jp/railways/tourist/english/info/seibuen.html |date=2007-08-04 }} web page Information of a Seibu group</ref> It is home to the Saitama Seibu Lions, a professional baseball team.

The stadium has a roof over the field and the stands, like other indoor ballparks. However, it lacks a wall behind the stands so that natural air comes into the field. This makes it possible for home runs to leave the stadium, something not possible in typical domed stadiums.

The stadium was built in 1979 without the roof and named {{nihongo|'''Seibu Lions Stadium'''|西武ライオンズ球場|Seibu Raionzu Kyūjō}} as the new home field of the Lions that moved from Fukuoka to Tokorozawa that year. Initially an open-air stadium, the installation of its roof took place in two phases: the first phase after the 1997 season, and the second phase after the 1998 seasons. At the beginning of the 1998 season, the stadium was renamed Seibu Dome although the domed roof had not been completed.

Originally, the Lions had planned to build a new stadium in Odaiba, but due to requiring to get approval from the three other Tokyo-based teams at the time (the Nippon-Ham Fighters, the Yomiuri Giants, and the Yakult Swallows), opposition from local fans, and the cost to build a new stadium, they decided to just add a roof to the stadium.

On March 1, 2005, the stadium was named {{nihongo|'''Invoice Seibu Dome'''|インボイスSEIBUドーム|Inboisu Seibu Dōmu}} as Invoice Inc. bought the naming rights of the stadium for the next two seasons. Upon expiration of the previous contract, on January 1, 2007,<ref>[http://www.comsn.co.jp/comsnpress/new/2006/12/04/index.html Goodwill Press release] December 5, 2006 ([https://web.archive.org/web/20061210161931/http://www.comsn.co.jp/comsnpress/new/2006/12/04/index.html Archived]) {{in lang|ja}}</ref> the name was changed again to {{nihongo|'''Goodwill Dome'''|グッドウィルドーム|Guddowiru Dōmu}} to reflect the sponsorship of Goodwill Group, Inc. The naming rights contract with Goodwill was intended to remain in effect for five years.

Although Seibu Dome was still the official name of the stadium, the stadium and media used the sponsored name almost exclusively during this period.<ref>[http://www.goodwill.com/gwg/english/corporate/history_2007.html goodwill history] {{webarchive|url=https://web.archive.org/web/20070927222536/http://www.goodwill.com/gwg/english/corporate/history_2007.html |date=2007-09-27 }}</ref> However, at the end of 2007, Goodwill's naming rights for both the stadium and team were seized due to Goodwill's illegal business movements. The dome's name was restored to '''Seibu Dome''' in 2008. On January 16, 2017, MetLife, a New York City-based financial institution, purchased naming rights for five years.<ref>{{ Cite web | access-date=2019-10-24 | archive-date=2019-10-24 | archive-url=https://web.archive.org/web/20191024181507/https://www.metlife.co.jp/about/press/2017/pdf/170116.pdf | title=メットライフ生命、西武ドームネーミングライツ（命名権）を取得 : 西武ドームは「メットライフドーム」に名称を変更 | url-status=dead | url=https://www.metlife.co.jp/about/press/2017/pdf/170116.pdf }}</ref> On March 1, 2022, Belluna, a mail order company out of Ageo City, Saitama Prefecture, bought the naming rights to the stadium after MetLife's naming right deal expired.<ref>{{Cite web |date=2022-01-17 |title=西武本拠地、今季から「ベルーナドーム」に改称 辻監督「変わらなければいけない年」 |url=https://full-count.jp/2022/01/17/post1176556/ |access-date=2022-03-25 |website=Full-Count（フルカウント） ― 野球ニュース・速報・コラム ― |language=ja}}</ref>

The stadium is located in front of Seibukyūjō-mae Station, the terminal station of the Seibu Sayama Line railway (a branch of the Seibu Ikebukuro Line connecting Tokorozawa with Tokyo) and the Seibu Yamaguchi Line people mover. Both lines are operated by Seibu Railway, the owner of the stadium and the Lions.

Queen performed at the stadium for their last show of the Hot Space Tour in 1982.<ref>{{cite book |last1=Chapman |first1=Phil |title=The Dead Straight Guide to Queen |date=2017 |publisher=This Day In Music Books}}</ref> New Japan Pro-Wrestling held the finals of the 2014 G1 Climax on August 10, 2014, at the arena.<ref>{{cite web|url=http://www.njpw.co.jp/news/detail.php?nid=10876|title=【電撃決定!!】なんと今年の『G1 Climax』決勝は、"西武ドーム"に初進出!! 新日本プロレスが2014年上半期の予定をイッキに発表!!|date=January 4, 2014|access-date=January 4, 2014|work=New Japan Pro-Wrestling|language=ja}}</ref> Lady Gaga performed two sold-out shows at the stadium for her Chromatica Ball tour on September 3–4, 2022.<ref>{{Cite web |last=Imada |first=Kaila |date=2022-04-20 |title=Lady Gaga is bringing her Chromatica Ball Tour to Tokyo this September |url=https://www.timeout.com/tokyo/news/lady-gaga-is-bringing-her-chromatica-ball-tour-to-tokyo-this-september-042022 |access-date=2023-08-08 |website=Time Out Tokyo |language=en-GB}}</ref> Aqours, the main group in the ''Love Live! Sunshine!!'' anime, held their final concert at Belluna Dome on June 21–22, 2025.<ref>{{cite news|last=Dennison|first=Kara|url=https://www.crunchyroll.com/news/latest/2024/11/20/love-live-sunshine-aqours-final-solo-live-details|title=Love Live! Sunshine!! Voice Actor Unit Aqours Locks in Details on Final Solo Live|publisher=Crunchyroll|date=November 20, 2024|access-date=June 22, 2025}}</ref> Travis Scott held a concert at the stadium for his Circus Maximus Tour on November 8, 2025, bringing out a surprise guest, Kanye West.<ref>{{Cite web |title=TRAVIS SCOTT - CIRCUS MAXIMUS JAPAN SHOW 2025 |url=https://www.livenation.co.jp/en/travisscott-2025 |access-date=2025-11-19 |website=www.livenation.co.jp |language=en-jp}}</ref><ref>{{Cite web |last=Lynch |first=Jessica |date=2025-11-10 |title=Travis Scott Brings Out Kanye West in Japan for Surprise Performance |url=https://www.billboard.com/music/rb-hip-hop/travis-scott-kanye-west-japan-1236109082/ |access-date=2025-11-19 |website=Billboard |language=en-US}}</ref>

<gallery> Image:Seibu Dome baseball stadium - 22.jpg|Invoice Seibu Dome (2006) Image:Seibu Dome baseball stadium - 03.jpg|Goodwill Dome (2007) Image:Seibu Dome baseball stadium - 26.jpg|Seibu Lions baseball game (2007) Image:Seibu Dome baseball stadium - 06.jpg|Seibu Dome artificial turf field (2007) Image:Seibu Dome Panorama.jpg|Seibu Dome panorama (2009) </gallery>

==Attendances==

The home attendances of the Saitama Seibu Lions at the Belluna Dome:

{| class="wikitable" ! Season !! Games !! Total attendance !! Average attendance |- | 2025 || 71 || 1,732,073 || 24,395 |}

<small>Source:<ref>https://npb.jp/statistics/2025/attendance.html</ref></small>

==See also== *Lists of stadiums *List of stadiums in Japan

==References== {{reflist}}

==External links== {{Commons category|Seibu Dome}} *[http://www.seibulions.jp/stadium/ MetLife Dome at Seibu Lions Official Site]

{{NPB Ballparks}} {{Saitama Seibu Lions}} {{Authority control}}

Category:Covered stadiums in Japan Category:Nippon Professional Baseball venues Category:MetLife Category:Seibu Lions Category:Saitama Seibu Lions Category:Buildings and structures in Tokorozawa, Saitama Category:Sports venues in Saitama Prefecture Category:Sports venues completed in 1979 Category:1979 establishments in Japan