1. See the Northern Lights. Iceland is one of the best places in the world to see the Northern Lights, or aurora borealis. These natural light displays are caused by the interaction of solar wind with the Earth's magnetic field, and they can be seen in Iceland during the winter months.
2. Visit the Blue Lagoon. The Blue Lagoon is a geothermal spa located in Grindavík, Iceland. The lagoon's water is heated by natural hot springs, and it is rich in minerals such as silica and sulfur. Visitors can relax in the lagoon and enjoy the beautiful scenery.
3. Take a hike on a glacier. Iceland is home to many glaciers, and there are several tour operators that offer glacier hikes. This is a great way to experience the natural beauty of Iceland and get some exercise.
4. Visit Thingvellir National Park. Thingvellir National Park is a UNESCO World Heritage Site and is home to the Þingvellir plain, where the North American and Eurasian tectonic plates are pulling apart. Visitors can walk along the Almannagjá rift and see the two continents drifting away from each other.
5. Go whale watching. Iceland is home to a variety of whale species, including humpback whales, minke whales, and dolphins. There are several tour operators that offer whale watching trips, and this is a great way to see these amazing animals in their natural environment.
6. Visit the Westfjords. The Westfjords is a remote and rugged region of Iceland that is home to some of the country's most stunning scenery. Visitors can explore the fjords by boat, hike along the cliffs, and visit the many small fishing villages.
7. Take a dip in geothermal hot pots. Geothermal hot pots are a popular way to relax in Iceland. There are many hot pots located throughout the country, and most of them are free to the public.
8. Visit the Vatnajökull Glacier. Vatnajökull is the largest glacier in Europe and covers an area of about 8,100 square kilometers. Visitors can explore the glacier by snowmobile, take a glacier hike, or visit the nearby ice caves.
9. See the puffins. Iceland is home to a large population of puffins, and these cute little birds can be seen at many locations around the country. Some of the best places to see puffins include Dyrhólaey, Látrabjarg, and the Vestmannaeyjar islands.
10. Visit the Landmannalaugar geothermal area. Landmannalaugar is a geothermal area in the Highlands of Iceland. Visitors can hike through the colorful mountains, relax in the natural hot springs, and enjoy the stunning scenery.