Borrehaugene was the first national park to be founded in Norway. Borre National Park is situated between Horten and Åsgårdstrand. The site provides important historical knowledge and can be seen as evidence that there was a center of power here in the Viking Age. The excavations also uncovered an unusually good selection of craft work, much of which is on display in Oslo at the Viking Ship Museum. This style has become known as "Borre style" and is, today, known for its beautiful animal and knot ornaments, which were often used for decorating harnesses. The finds also confirm that there was a Viking ship buried at Borrehaugene. The Borre mound cemetery at Borre National Park contains graves of kings dating back to the Migration Period. The park covers and has the largest collection of kings graves in Scandinavia. These burial mounds may represent North Europe’s most extensive collection of graves of the old Scandinavian Yngling dynasty. From 1989 to 1991, new excavations were undertaken both in and around the national park.