Ticket centers at the 12 World Cup stadiums will open from May 31.

The centers will be opening 10 days before stadiums' first games starting on June 9 with Munich, which hosts the opening match between Germany and Costa Rica.

Until the day before games, fans will be able to buy any tickets still available or pick up tickets that were ordered over the Internet but not posted by May 20, the organizing committee said Thursday.

They will be open from 11 a.m. to 7 p.m. daily.