The Secret Lagoon Geothermal Pool

The Secret Lagoon, or Gamla Laugin, is Iceland’s oldest swimming pool, built in 1891 in the geothermal area of Hverahólmi near Flúðir. Fed by hot springs such as Vaðmálahver, Básahver, and the lively Litli Geysir, which erupts every few minutes, the pool is constantly replenished with fresh water in just 24 hours. Naturally warm at 38–40°C year-round, the mineral-rich waters provide both relaxation and health benefits in any weather. Kept simple and natural, the lagoon offers an authentic Icelandic bathing experience in a truly unique setting.

History of the Secret Lagoon

Bathing in the warm waters of Hverahólmi has been a tradition for centuries. Locals once used the springs not only for relaxation but also for washing clothes in Vaðmálahver. The site even served as the meeting place for the Flúðir community’s legislative body until 1894. In 1909, Iceland’s first swimming lessons were held here, continuing annually until 1947, when the lagoon fell into disuse.

The vision to revive Gamla Laugin emerged in 2005, with a focus on comfort while preserving authenticity. After years of restoration, the Secret Lagoon reopened on June 7, 2014, bringing new life to Iceland’s oldest pool and its rich cultural heritage.