9Blue Lagoon, Iceland
The Blue Lagoon is arguably one of the most famous geothermal spas in the world. Nestled in a lava field near Grindavík, Iceland, its milky blue waters are rich in minerals like silica and sulfur, known for their healing properties. The lagoon maintains a temperature of about 37-39°C (98-102°F) year-round, making it a perfect destination even in winter.
Visitors can enjoy outdoor bathing while surrounded by stunning volcanic landscapes, complete with steam rising from the water. The Blue Lagoon also offers luxurious spa treatments, including massages and skincare services that utilize the mineral-rich waters. Dining options range from casual to fine dining, ensuring a memorable experience amidst this surreal setting.