Image by Egill Bjarnason Lonely Planet

This swanky lakeside soaking spot boasts three modern wading pools and a cedar-lined steam room that’s fed by a naturally occurring vent below. The cool cafe (buffet lunch/dinner 2900/3900kr) has lake views. You can rent towels or swimsuits (800kr each) and dressing gowns (1500kr) if you left yours at home.