Vardøhus Fortress is the world's northernmost and Norway's easternmost fortress, located in the town of Vardø in Finnmark. It is a popular tourist attraction, and a great place to learn about Norway's history. The fortress was built in the 17th century and is one of the oldest in Norway. It has been used as a prison, a military base, and a customs house. Today, the fortress is a museum, and visitors can explore the many rooms and learn about the history of the fortress. There are also guided tours available. The fortress is surrounded by a beautiful landscape, with views of the sea and the mountains. There is also a café and a shop where visitors can buy souvenirs. Vardøhus Fortress is a must-see for anyone visiting the area, and a great way to learn about Norway's history.