Thingvellir National Park is a UNESCO World Heritage Site and a national treasure of Iceland. It is about 25 miles northeast of Reykjavik, the capital of Iceland, making it a popular day trip destination for travelers.

Here are some of the top activities and attractions to explore in Thingvellir:

• Walk between the North American and Eurasian tectonic plates

• Experience the unique opportunity to snorkel or scuba dive in the crystal-clear waters of Silfra Fissure, where you can swim between the North American and Eurasian tectonic plates.

• Explore the dramatic Almannagjá Gorge, a rift created by the plates separating.

• Hike to Oxararfoss waterfall, which flows from the edge of the North American tectonic plate.