Swimming trunks instead of winter sweaters. The RheinRiff in Düsseldorf is the perfect place to simply extend the summer. The world's largest indoor surfing hall has temperatures like August all year round. Surf pros push themselves to the limit with maximum power during the big wave sessions. But newcomers who are standing on a surfboard for the first time can also quickly celebrate their first successes on the nine-metre-wide Citywave Düsseldorf, which they can then celebrate with a cool drink in the beach club. Four indoor beach volleyball courts and a surf skate course under palm trees also provide a touch of Rio on the Rhine. An exuberant atmosphere is guaranteed at the RheinRiff Games, a beach Olympics which, like the winter curling challenge, can be booked individually as an incentive or as a team event. In the evening, the sports, conference and event location transforms into a party mile. Among other things, the electro scene has been meeting regularly in the gravel pit for years, there are neighborhood festivals and the palm market as well as private parties with completely new party formats.