Akershus Fortress is a grand medieval castle and fortress sitting right on the Oslo Fjord, in Norway’s capital. Built around the late 1290s by King Haakon V, it was designed to protect Oslo and assert royal power during a time when Norway faced threats from rival kingdoms and internal rebellions. The castle was originally a medieval fortification with thick stone walls, towers, and gates, and it successfully withstood several sieges over the centuries, including attacks from Swedish and Danish forces.

In the 17th century, under King Christian IV, the fortress was modernized and transformed into a Renaissance-style royal residence. The interiors were decorated with grand halls, painted ceilings, and ornate furnishings fit for a king, though it never became a permanent royal home. Instead, it served as a stronghold, a prison, and later, a military base. During World War II, it was occupied by German forces, who used it as headquarters and also carried out executions on the grounds. Today, the fortress is a popular tourist destination, with its cobblestone paths, commanding walls, and sweeping views over the harbor. Visitors can explore the castle itself, see the royal mausoleum where Norwegian monarchs are buried, and even wander through the former dungeons. With its rich history and beautiful setting, Akershus is both a symbol of Norway’s resilience and a peaceful spot in the heart of Oslo.