Cost per night: $10,000+
The Retreat at Blue Lagoon is the most expensive hotel in Iceland. It is a luxurious resort located in the heart of the Blue Lagoon, a geothermal spa that is known for its healing properties. The hotel has 62 suites, all of which offer stunning views of the lagoon and the surrounding lava fields. The suites are equipped with a variety of luxurious amenities, including private plunge pools, steam rooms, and fireplaces. The hotel also offers a variety of activities, including yoga classes, massages, and boat tours.