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Photo: Kuhn, CC BY-SA 3.0 de via Wikimedia Commons
A 40.6-cm cannon, part of the World War II coastal defences, built during the German occupation. It was designed as a naval gun, but was used as coastal defence, as the battleships it was intended for were never built. With a max range of 56 km, it could theoretically hit Narvik. Tours must be booked 48 hr ahead.
The 40.6 cm SK C/34, sometimes known as the Adolfkanone, was a German naval gun, designed in 1934 by Krupp and originally intended for the early H-class battleships.
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During world War II, about 1000 Soviet prisoners were sent here. The foundations of this camp remain, and there is a memorial.
The northernmost medieval stone church of Norway and the world's northernmost surviving medieval building. The area had wooden churches from 1100, and the current church was probably finished in 1440.
A museum and history centre, covering more than 2,000 years of history of the region, which was a Viking power centre. Here you can learn about the powerful local Viking king Tore Hund, who turned the tide of Norwegian history. There is also a small recreated medieval village next to the centre.
"The trail along the sea" is a trail going from Trondenes historic centre towards Harstad. This is a pleasant coastal walk. It can be combined with walking between Trondenes and Harstad.