Aremberg Castle, Medieval castle in Aremberg, Germany

Aremberg Castle is a ruined hilltop castle on the 623.8 m Aremberg, a wooded tertiary volcano in the Eifel. The sparse remains include the moat with its wall, fortress bastions and twelve linden trees from the former palace garden. A 17 m lookout tower built in 1854 from castle stones stands on the site, now locked and no longer usable as a viewpoint.

The castle was founded in 1166 and became the foundation for the power and influence of the House of Arenberg in the region. Over centuries it underwent changes that reflected the shifting military and political needs of the area.

The name Aremberg derives from the castle's first mention as "Arberg" in 1166. Twelve linden trees from the former castle garden still stand on the grounds, and the 17-meter lookout tower built in 1854 from castle stones is now locked. The site is a cultural heritage monument in Germany.

The ruins lie on the wooded summit of the Aremberg at 623.8 m, above the village on the western slope. The 17 m lookout tower built in 1854 is locked and, because of tree growth, has not served as a viewpoint for decades; the museum it once housed no longer exists. Remnants of every building period survive, including the moat with its wall, fortress bastions and twelve lindens from the former palace garden.

The 17-metre lookout tower on the castle grounds was built in 1854 from stones of the former castle. Trees have long since blocked its view, its museum is gone and the tower is locked today. Twelve lime trees from the former palace garden also survive.