You can cool off on hot summer days with a jump into the Limmat in the middle of Zurich. The Upper Letten River Pool is a popular meeting spot and has a 400 meter-long (1,312 feet) swimming canal and a two meter (6.5 feet) high diving board. There are two beach volleyball fields and a place for playing boule on the opposite side of the river.

Whoever prefers to take it easy can sunbathe on one of the sun terraces with a book from the book boxes provided by the Bühl Foundation. You can get refreshments at the bar when you feel like it too.