Akerøy Fort

Akerøy Fort is a coastal fortress located on an island in Hvaler featuring defensive walls, a gun tower, and two residential buildings including the commandant's residence. The structure spans across the island and sits at an elevated position offering views over the outer Oslofjord.

The fort was built in 1664 as a timber stronghold to protect shipping from pirates and Swedish forces. It was destroyed in 1808 but its remains were later used by the Norwegian navy for artillery training exercises.

The fort represents Norwegian coastal defense architecture built to protect sea routes from threats. Visitors can see how the structure was designed to dominate the surrounding waters and control passage through this important waterway.

The site underwent restoration in the 1960s through community fundraising and volunteer efforts from local and international groups. Visitors should wear sturdy footwear and be prepared for uneven terrain and some elevation changes when exploring the ruins.

The abandoned fort was used by the Norwegian navy as a target for artillery practice during the 1800s. This unusual second life shows how the ruins remained functionally useful to the military long after their original defensive purpose ended.