It was built around 1288 as part of a chain of defensive forts intended to subdue the local population.
The castle is famously associated with the imprisonment of Radboud of Utrecht, though the castle predates his life.
During the 16th century, the castle successfully resisted a siege by the Geuzen forces.
Much of the interior structure was heavily renovated in the 1890s, changing the original layout to suit 19th-century preservation standards.
The central courtyard remains largely open, allowing for a clear view of the defensive walls and turrets from the center.
It is one of the only Dutch castles that has retained its original medieval square ground plan.
The castle moat still holds water, which was historically used as a primary defensive perimeter.
Radboud Castle is a square, 13th-century moated fortress located in Medemblik, commissioned by Floris V, Count of Holland. The site served as a strategic military outpost to control the West Frisians during the medieval period. It remains one of the few surviving original castles from the 1280s in the Netherlands. The structure features four corner towers and was significantly restored in the late 19th century under the direction of architect P.J.H. Cuypers. Today, the fortress functions as a museum focusing on the history of the West Frisian region and castle life. Exhibits include local archaeological finds and historical armor. The castle is positioned directly on the edge of the IJsselmeer, utilizing the water as a natural defensive barrier.
From the edge of the harbor jetty looking back at the castle wall and its reflection in the moat.
Climb the narrow staircases to the top of the tower for an expansive view of the IJsselmeer harbor.
Participate in the interactive scavenger hunt if visiting with children to explore the towers more thoroughly.
Walk the perimeter of the moat to see the castle's reflection from the harbor side.
Attempting to climb the towers if you have limited mobility, as the medieval stone staircases are steep, uneven, and narrow.
Closed on Mondays during the off-season; check local schedules for winter closures.
