Location: Near the town of Flúðir, South Iceland
Distance from Reykjavik: About 1 hour and 40 minutes by car
Perfect for: Relaxation, geothermal experiences, family-friendly stops, quieter alternative to Blue Lagoon

Why Visit the Secret Lagoon?

The Secret Lagoon, known locally as Gamla Laugin, offers one of the most authentic geothermal bathing experiences in Iceland. Built in 1891, it is the oldest swimming pool in the country, tucked away in the small geothermal area of Hverahólmi near Flúðir.

This is not a flashy spa, it’s a peaceful, natural retreat where you can enjoy the warm mineral-rich waters surrounded by steaming vents, mossy lava rocks, and bubbling hot springs. The vibe is relaxed and rustic, perfect if you are looking to unwind without the crowds of Iceland’s larger spas.

What Makes It Special

• The geothermal water comes directly from nearby hot springs, including Litli Geysir, which erupts every few minutes and adds a natural show while you soak.

• Water stays between 38 and 40 degrees Celsius year-round

• The lagoon’s water is fully replaced every 24 hours, ensuring a clean and fresh bathing experience

• There are wooden walkways, a cozy café, and basic changing rooms and showers on site

• The entire site is surrounded by natural beauty and a calm atmosphere, ideal after a day of exploring the Golden Circle

Prices and Entry (as of 2025)

• Adults (15 and older): 4200 ISK

• Children (14 and younger): 200 ISK

  • Note: Max 3 children per 1 adult

• Seniors (67+) and guests with disabilities: 2950 ISK

• Pre-booking is highly recommended, especially during high season

Bring your own towel and swimsuit, or rent them on-site for an extra fee

Traveler Tips

• The lagoon is family-friendly, but kids should be supervised at all times

• You can combine a visit here with the Golden Circle route, as it is located just a short detour off the main trail

• The changing rooms are clean but basic — this is part of the charm

• Be sure to shower thoroughly before entering the pool — it is standard practice in all Icelandic pools

Whether you are ending your day of sightseeing or just want a moment of peace surrounded by nature, the Secret Lagoon is a must visit for anyone who wants to soak in warm Icelandic history, literally.