The blue lagoon is a geothermal spa in Grindavik in southwest Iceland. It is a man-made lagoon fed by the waters of the neighbouring geothermal plant Svartsengi. The water temperature is a balmy 37-39 centigrade. The waters have healing properties due to a high silica and sulphur content which gives the water its opaque blue colour.

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Top Reykjanes UNESCO Global Geopark Hotel Reviews

Courtyard by Marriott Reykjavik Keflavik Airport

10/10 Excellent

"Hotel was just as presented, Very friendly attentive staff and 5 minute ride to airport"

Reykjanes Guesthouse

10/10 Excellent

"Our 3 bedroom apartment at the Reykjanes Guesthouse was clean, spacious, and a perfect “home base” for our trip. The well appointed kitchen had everything we needed to make a meal or two in, and being just 26 minutes from KEF, with the Blue Lagoon in between, meant very easy arrival and departure days. From Grindavik, we were easily able to drive to Geysir, Gullfoss, and Thingvellir National Park (with substantial stops at each) in one day, with dinner in Reykjavík. This was the perfect spot for our trip to Iceland with our 3 boys, 20, 18, and 16. "