It’s hard to think of a better setting for a relaxing weekend away than The Retreat at Blue Lagoon. Situated in an 800-year-old lava field less than an hour from Reykjavik, the hotel boasts a unique geothermal spa. Gently steaming at around 98-104 degrees Fahrenheit, the mineral-rich water is hailed for its natural healing properties, treating everything from psoriasis to eczema. The hotel also features an expansive spa where guests can indulge in a range of treatments; we recommend booking a truly unforgettable float therapy session. If you want to make your stay extra special, consider booking the 2,500-sq-ft Blue Lagoon Suite which features its own private lagoon.