Built in 2016, Raet National Park was established to preserve and protect the area along Arendal’s coastal line. It spreads from Hasseltangen to Lyngør covering around 600 square kilometres of land and sea. The park owes its popularity to the existence of traces of the ice age that are almost 12,000 years old. It is now considered a hub for outdoor recreational activities like canoeing, diving, kayaking, and cycling.