A must visit is the Blue Lagoon. A thermal bath near the international airport. In summer the water looks more green then blue. It's because of summer sun. The algae grows and begin to flourishes. So it looks green. That's the explanation of Blue Lagoon. Don't know why the lake outside the bath looked blue. Maybe other algae.

Sorry no picture from the bath. No professional cameras allowed.

Another highlight was an other high tempature area and the coast.