Bremgarten is a quiet hub for Swiss river surfing on the Reuss River, with two distinct waves within easy walking distance of each other in this small Aargau town. The upper wave draws mostly kayakers and is flow-sensitive enough that a single overnight storm can wash it out or sharpen it into a solid hole. Flusswelle Bremgarten itself, the wider and more technical of the pair, is where board surfers head, while the narrower Untere Welle downstream takes constant correction to stay locked into. Spring and summer meltwater give the most reliable flows, and it stays noticeably less crowded than Switzerland's bigger-name spots.