The group's first public performance was at a concert in South Africa in March 2005 in support of Nelson Mandela's 46664 AIDS awareness campaign. The tour began properly with a concert at the Brixton Academy venue in London, with tickets sold primarily to members of the official Queen fan club. An arena tour of Europe followed in spring 2005, with dates at venues such as Wembley Pavilion, Cardiff International Arena and Le Zénith in France. Four outdoor stadium dates were scheduled for the first time in Portugal at Estadio do Restelo (Att: 30,000), at Rhein-Energie Stadion in Cologne, Germany (Att:27,500), Gelredome in Arnhem, the Netherlands (Att:25,000) and at Hyde Park in the UK (Att:65,000) in the summer of 2005.