The best hot springs for tourists in Iceland are the Sky Lagoon, the Secret Lagoon, and the Blue Lagoon. Each has a resort-style setup where you can easily stay after taking a long dip in the hot spring.
The Sky Lagoon is a newer pool only 15 minutes from the center of Reykjavik. The Blue Lagoon has long been one of Iceland's most popular places to visit. It welcomes about 2.3 million people each year. Each day, about 6,000 people visit the lagoon.