Westfalenstadion (German pronunciation: [vɛstˈfaːlənˌʃtaːdi̯ɔn] , lit. 'Westphalia stadium') is a football stadium in Dortmund, North Rhine-Westphalia, Germany, which is the home stadium of Borussia Dortmund. Officially called Signal Iduna Park [zɪɡˌnaːl ʔiˈduːna ˌpaʁk] for sponsorship reasons and BVB Stadion Dortmund in UEFA competitions, the name derives from the former Prussian province of Westphalia.

From Wikipedia