Quick answer: Iceland’s best soaks include the Blue Lagoon, the Sky Lagoon, the Mývatn Nature Baths, the Secret Lagoon and the Reykjadalur hot river.
Geothermal bathing is the heart of Icelandic life. These eight range from famous spa lagoons to wild natural springs.
Iceland’s 8 best hot springs
The Blue Lagoon
The famous milky-blue spa in a lava field near the airport.
Sky Lagoon, Reykjavik
A clifftop infinity lagoon with an ocean view, near the capital.
Mývatn Nature Baths
The quieter, cheaper ‘Blue Lagoon of the north’.
The Secret Lagoon, Flúðir
A rustic, historic pool on the Golden Circle.
Reykjadalur hot river
Hike up a valley to soak in a naturally warm river.
Hvammsvík Hot Springs
Seaside geothermal pools near Reykjavik.
GeoSea, Húsavík
Sea-water geothermal baths overlooking the bay.
Landmannalaugar
Natural hot springs amid the colourful highlands (summer).
How to choose
Book the Blue Lagoon and Sky Lagoon ahead. For free or cheap natural soaks, try Reykjadalur or the highland springs. Shower before entering (local etiquette), and bring a towel for the wild spots.