Blue Lagoon, Thermal bath in Grindavíkurbær, Iceland.
The Blue Lagoon contains silica-rich geothermal seawater that maintains temperatures between 37 and 39 degrees Celsius throughout its outdoor pools and bathing areas.
In 1976, the water originated as runoff from the Svartsengi power plant, with the first therapeutic effects discovered by a psoriasis patient in 1981.
The facility maintains traditional Icelandic bathing practices, requiring visitors to shower without swimwear before entering the waters, following local hygiene standards.
Reservations are necessary due to limited capacity, with entry prices including access to the main lagoon, silica mud masks, and basic facilities.
The water exhibits a natural turquoise color due to the combination of silica, algae, and mineral content from the underground geological formations.
Location: Grindavíkurbær
Inception: 1987
Website: http://bluelagoon.com
GPS coordinates: 63.87920,-22.44552
Latest update: July 29, 2025 07:02
A list of unique natural swimming pools and basins has been compiled. Some are bold architectural constructions, others are the result of geological phenomena. Some are located in luxury hotels, others are accessible to the public. What makes these sites particularly interesting is their diversity: there are pools hanging at several hundred meters altitude overlooking cities, geothermal basins fed directly by volcanic activity, a 40-meter deep diving pool in Italy, and even a natural basin formed in rock on a Greek island. There are also recent installations that push engineering boundaries as well as historic sites used for nearly a century. Whether you seek relaxation in thermal waters or swimming with panoramic views, this selection provides a good overview of what exists.
These thermal springs show natural hot water sources across the world. The waters contain minerals and steam near mountains or rest between plants. The springs exist in different regions, from Iceland to Japan, offering various temperatures and mineral compositions. Locations range from urban baths to mountain springs.
Fagradalsfjall
8.9 km
Blue Lagoon
137 m
Keilir
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Krýsuvík
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Reykjanes
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Þorbjörn
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Viking World museum
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Reykjanesviti
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Svartsengi
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Uppspretta
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Reykjanes
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Krýsuvíkurkirkja
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Garðskagaviti
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Sandgerði lighthouse
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Bridge between continents
11.3 kmReviews
Real people, real opinions — but not verified.
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Great experience, we booked the 9 PM slot to avoid the crowds as much as possible 😜
An experience to have during your visit to the island. Note that it is not cheap and is of course very touristy. It should be done upon your arrival as it is close to the airport.
Great experience, we booked the 9 PM slot to avoid the crowds as much as possible 😜
An experience to have during your visit to the island. Note that it is not cheap and is of course very touristy. It should be done upon your arrival as it is close to the airport.
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