Vandkulturhuset - Danish for "Water Culture House" - is Copenhagen's cutting-edge swim complex, an impossibly-cool indoor aquatic center with five different swimming areas and multiple spa facilities. With pools devoted to exercise, as well as heated dipping pools, a "mountain" pool area - complete with trampoline, climbing wall, and springboard - and an entire indoor lake, this is so much more than your average public pool. In case you get bored, there's also a bowling alley, conference hall, and several restaurants. A full-day pass is 65 DKK for adults, 45 DKK for children. Swimsuits and towels can be rented for 25 DKK each.