18The Retreat at Blue Lagoon, Iceland
Image courtesy of bluelagooon.com
The isolated Blue Lagoon’s Retreat Hotel is surrounded by mossy lava fields. This hip hideaway offers guests after-hours access to their popular geothermal lagoon. Indeed, you can slip right into it from your room since the spa actually encircles the property. You can also opt for an in-water massage. They even get you off to a good start by providing you with strawberries and champagne upon check-in!
