Munkholmen (Norwegian: the monk's islet) is an islet north of Trondheim, Norway. It sits in the Trondheimsfjord about 1.3 kilometres
northwest of the island of Brattøra and the mouth of the river Nidelva. The islet has served as a place of execution, a monastery,
a fortress, prison, and a World War II anti-aircraft gun station. Today, Munkholmen is a popular tourist attraction and recreation
site. Construction of a fort on the island began in 1658. When it was completed in 1661, the fort was also used as a state prison
for society's rejects.