Hammershus is a historic castle located on the northern coast of Bornholm, an island in Denmark. Built in the late 12th century, it served as a royal fortress and a stronghold for the Danish kings. The castle is known for its impressive ruins, which include tall walls and towers that overlook the surrounding landscape. Today, Hammershus is a popular tourist destination, attracting visitors with its scenic views and rich history. The site is surrounded by beautiful nature, making it an ideal spot for hiking and exploring. It is also a significant cultural landmark, reflecting the medieval architecture of the region.