The Allianz-Arena is a football stadium in the north of Munich. FC Bayern München and TSV 1860 München played their home games at Allianz Arena since the opening of the stadium in 2005. Former European champions FC Bayern München, also known as FC Hollywood, are the record champions in Germany and one of the richest football clubs in the world. They usually play their league matches in front of capacity crowds. The Allianz group, a large financial services provider, bought the rights to name the arena for 30 years. It was known as the FIFA World Cup Stadium Munich during the 2006 FIFA World Cup, since FIFA does not allow sponsorship of stadium names that conflict with its own sponsorship deals. FC Bayern München are also required to cover up the stadium name during UEFA Champions League or UEFA Cup matches, due to similar restrictions of UEFA. Soon after its construction, Allianz-Arena's distinctive shape inspired its occasional nickname: Inflatable boat. The colour of the outside of the stadium can turn red for FC Bayern München matches and blue for TSV 1860 München matches.