Castle of Fleckenstein

Castle of Fleckenstein is one of Alsace's largest fortified castles, dramatically positioned on a rocky bar 100 metres long at 338 metres above sea level in the Regional Natural Park of the Northern Vosges. Built in the 12th century, it was an impregnable fortress for four centuries before being destroyed in 1689 by French troops during regional conflicts. The unique troglodytic architecture features cave-dwelling stairs and rooms carved directly into the rock, creating a distinctive ship-like form with internal stone structures including a square tower, low court, and rock-carved chambers. Despite its ruined state, Fleckenstein attracts visitors with exceptional views over surrounding woodlands and hills, while facilities include a restaurant and picnic area. It ranks as the second most visited castle in Alsace and the most visited troglodytic castle in the region.