Welcome to the Secret Lagoon (Gamla Laugin) — Iceland’s oldest man‑made swimming pool, warmed naturally by geothermal springs and wrapped in countryside calm.

Table of Contents
Quick Facts
- Where: Flúðir (South Iceland), ~100 km from Reykjavík
- Part of: Golden Circle (near geysers and waterfalls)
- Average soak: 60–90 minutes
- Facilities: Changing rooms, showers, towel rental, small bar/snacks
Tickets & Passes
| Option |
What You Get |
Good For |
| Standard Entry |
Access to lagoon + showers |
Everyone |
| With Towel |
Entry + towel rental |
Light packers |
| Evening Slot |
Entry at dusk |
Photographers, quieter vibes |
Tip: Book ahead during summer and weekends — capacity is limited.
Getting There
- Drive: Reykjavík → Ring Road (1) → Route 35 → Flúðir (~90 min, conditions vary).
- Tours: Golden Circle packages often include the Secret Lagoon.
- Winter: Check road & weather at https://safetravel.is/.
What to Expect
- Natural geothermal pool with steady warm temperatures (~38–40°C).
- Steam vents and a small geyser add ambience; respect barriers.
- On busy days, it’s sociable; late evenings feel tranquil.
Etiquette
- ✅ Shower thoroughly (without swimwear) before entering — it’s Icelandic pool culture.
- ✅ Keep glass and breakables out; use plastic cups if available.
- ✅ Quiet voices after dusk; let the setting be the soundtrack.
- ❌ No diving or splashing near vents; keep to marked zones.
Packing List
- Swimsuit, quick‑dry towel (or rent), flip‑flops/sandals, hair tie
- Water bottle, light snack, waterproof phone pouch
- Winter: hat and warm layers for before/after the soak
Best Timing
- Summer: Book sunset slots for golden light.
- Shoulder seasons: Late afternoon for fewer crowds.
- Winter: Clear nights may bring northern lights — check forecasts.
Safety & Health
If you feel lightheaded, exit slowly, hydrate, and cool down. Hot water + cold air can sneak up on you.
Health notes
- Limit alcohol; hydrate well.
- Pregnant travelers: consult your doctor about hot water exposure.
- Remove silver jewelry (can darken near sulfur). [^sulfur]
Sample Itinerary
10:00 Þingvellir National Park
12:00 Geysir Geothermal Area (lunch)
14:00 Gullfoss Waterfall
16:00 Secret Lagoon soak (90 minutes)
18:00 Dinner in Flúðir → Reykjavík
Bottom Line
Book ahead, shower well, pack light, and time your visit with the light — the Secret Lagoon rewards simplicity and respect for its geothermal nature.
[^sulfur]: The mild sulfur smell is normal around geothermal pools.