Þingvellir National Park
Thingvellir (Þingvellir) National Park is an important historical, cultural, and natural landmark. It is on a UNESCO World Heritage Site for both its natural and cultural significance. Beautiful winter or summer, there are many hiking trails around the park. Thingvellir is also the site of the largest natural lake in Iceland, Lake Thingvellir. The legendary snorkeling and diving site at Silfra is found here, and it is possible to arrange a snorkeling or diving trip just about every day.