1. Explore the geological wonders of Thingvellir National Park: stand between the North American and Eurasian continental plates, feel the fusion of history and nature, and visit waterfalls. 2. Visit the Geysir geothermal area and experience the eruption of the Strokkur geyser: it erupts every 5 to 10 minutes, and the water column is as high as 20 meters, which is breathtaking.