This oasis near the Keflavik airport is a geothermal spa, with steaming milky blue water that contrasts beautifully against the black lava field that surrounds it.
Contrary to popular belief, this lagoon is not a natural formation; it was formed in 1976 by excess water from a geothermal power plant nearby. The chimneys you can see from the lagoon may appear a little off-putting, but don't worry: the water is completely chemical-free and clean.
In fact, the Blue Lagoon's water is actually rich with minerals that are supposedly great for your skin. As a result, don't be surprised if you see other visitors wading through the water in a zombie-like stupour with their faces covered in clay!
Since its official opening as a public bathing facility in 1987, the Blue Lagoon has become one of the most popular attractions in Iceland, not only for tourists but for locals, too. Consequently, it can get rather busy and it's usually a good idea to book your ticket ahead of time so you're guaranteed entry.
January 1st to May 25th
May 26th to June 29th
June 20th to August 20th
August 21st to October 1st
October 2nd to December 31st
'Comfort' Basic Entry
'Premium' Entry (includes robe, towel, slippers)