Geosea Geothermal Sea Baths

Overtourism is a tremendous problem for Iceland—its iconic Blue Lagoon packs in visitors by the busload. But roughly 300 miles north in Husavik, a port town along the country’s Arctic Coast Way, a lesser-known geothermal spa gives its guests plenty of room to breathe. Opened in August 2018, Geosea draws its mineral-­rich seawaters from two nearby drill holes. It has multiple infinity-edged pools and a built-­in waterfall, swim-­up bar and bathtub­-warm water averaging around 100°F. The spa operates year-round, staying open till midnight in summer and 10 p.m. in winter—a spectacular way to catch the northern lights when swimming after dark. —Ashlea Halpern