1. Silfra: Fissure Snorkeling Tour with Underwater Photos
Snorkel at a site that National Geographic called one of the top dive sites in the world with this tour of the Silfra Fissure in Þingvellir National Park. Stay warm as you explore this magical underwater glacial world with a high-quality dry suit. Swim through pure, filtered glacial meltwater and keep your eyes peeled for local plant species and marine life like the dwarf char. Located in the UNESCO World Heritage Site of Þingvellir National Park, explore the valley where the tectonic plates of North America and Europe drift further apart every year.