//
Photo: Diego Delso, CC BY-SA 4.0 via Wikimedia Commons
The ancient fortress island, a popular spot for swimming, sunbathing, and visiting the old monastery. The ferry boat out of the island operates in the summer (from mid May to early September).
Munkholmen is an islet in Trondheim Municipality in Trøndelag county, Norway. The 13,000-square-metre (3.2-acre) island sits in the Trondheimsfjord about 1.3 kilometres (0.81 mi) northwest of the island of Brattøra and the mouth of the river Nidelva in the center of the city of Trondheim. The islet has served as a place of execution, a monastery, a fortress, a prison, and a World War II anti-aircraft gun station. Today, Munkholmen is a popular tourist attraction and recreation site.
© OpenStreetMap contributors
The German submarine base for the 13th flotilla during the German occupation of Norway (1940 - 1945). Today the bunker houses several archives, among them are the Trondheim city archives, NTNU university and governmental archives.
The central square is the hub of Trondheim. Surrounded by shops and cafés, it is often used for events. There are also vendors with market stalls that sell tourist kitch and souvenirs, food, clothes, accessories and other items. Not to mention Trondheim Torg, which is one of the city's largest shopping malls- home to clothing stores, bookstores, and restaurants and cafes. At the center stands an 18-metre-high statue of King Olav Tryggvason, the founder of the city. It is also a functioning sundial.
The "Church of Our Lady" also dates from the Middle Ages but was partially rebuilt after the 1708 fire.
The city library is built upon the ruins of a medieval church and some archaeological objects are on display. The building, which was built as the original city hall in the 19th century, is a remnant of the past. Also, being a library you can also borrow and read books, and it's the site of various events.
Trondheim Science Center
A center for popularizing science, has lots of exhibits, of which many are interactive. Also has a gift store. It is home to one of Norway's largest planetariums which was opened in 2017.