This well-known spa, operating since 1794, is fed from a saline mineral hot spring that bubbles up at the foot of Round Hill, 3km from the sea. The waters are a near-constant 33°C (92°F). The spa, which is attached to the Milk River Hotel, is owned by the government. Public and private baths are available.

Many recommend drinking the waters as a tonic, but they’re the most radioactive spa waters in the world; bathers are limited to only 15 minutes, though you are allowed three baths a day. About 200m north of the spa is the open-air Milk River Mineral Spa Swimming Pool.