Krauma

Krauma is a relatively new hot spring in western Iceland. It's got a series of several springs at different temperatures. The facilities and the setting are beautiful, and, though not a bargain, it's not insanely expensive either.

Blue Lagoon (Bláa Lónið)

While it's one of Iceland's iconic tourist attractions, it's probably not a must-see, especially on a repeat trip to Iceland. However, it's one of those once-in-a-lifetime price tag experiences that, as the most well known activity in the country, gives you a shared experience with every other tourist that visits the country and does offer iconic blue photos. Entirely man-made you can explore the pool with a drink in your hand (part of the admission price).