Stortårnet is a historical landmark located in Halden. The tower was built in 1854 and is 27 meters high. It was built as part of Halden Fortress and has been an important symbol for the city for over 150 years. Stortårnet was originally used to monitor the approach to the city and has thus had strategic importance throughout history.
The building is constructed of brick and has a characteristic design that makes it easily recognizable. The tower is accessible to visitors, and it is possible to climb to the top to get a panoramic view of Halden and the surrounding area. Stortårnet is also part of several cultural events and activities that take place in the area, which helps to preserve and communicate the city's history.