When the championships are held in the famous London suburb of Wimbledon for two weeks every year, it is the prestigious Center Court that stands in the center of attention right from the very beginning. Traditionally, the defending champion in the men's singles opens the tournament with a match on the Center Court. Following the two other Grand Slam Tournaments in Melbourne and Paris, the players have to prepare themselves for completely different conditions, since it is only at Wimbledon that they play on grass. This is cut to the exact millimetre, cared for to a painstaking degree and can be completely covered in 40 seconds in the event of rain. The All England Lawn Tennis Club is a non-profit organization, that uses its revenues for the promotion of the sport of tennis. Additional income comes from the sale of a wide range of souvenirs in the Wimbledon shop, which visitors pass through on the way to the museum. This is where tradition and technology are represented in equal measure, with historic memorabilia rubbing shoulders with interactive touch screens. In addition, state-of-the-art technology can be found in the laundry too, where Miele Professional washing machines and dryers work reliably behind the scenes.