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
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