Visit Caldea spa

Thermal pools along the Uruguay river in the country’s northwest.

Mud pools and hot springs near Nadi.

Soviet-era spa village in the mountains where the Dzau mineral water is still bottled from natural springs.

Budapest's grand thermal bathhouse.

Fairy-tale romantic castle above a town of thermal springs.

Geysers, hot springs and Maori culture.

Waterfall-and-hot-spring town that is Ecuador’s adventure capital.

Soak in a naturally warm pool on an uninhabited island, icebergs drifting past.