Vök Baths

You walk out along a wooden walkway to two round pools that float on Lake Urriðavatn, the only floating pools in Iceland, and soak at the level of the lake surface. Guides put the floating pools around 40 to 41°C, with the shore pools a little cooler at about 37 to 38°C. The water is drilled from deep below the lake at roughly 75°C and cooled with lake water; it is certified safe to drink, and the free tea bar pours it straight from the tap.

Between soaks you can jump into the lake itself, which sits around 10 to 15°C in summer and much colder the rest of the year, or walk through a cold mist tunnel. Vök opened in 2019 and is five minutes from Egilsstaðir, just off the Ring Road, which makes it the obvious stop in East Iceland. Recent listings put adult entry at about 7,690 ISK.

Shower without a swimsuit before entering. The honest downside: summer slots sell out and walk-ins are turned away, and the area is flat farmland rather than mountains.