Château de Sedan, Medieval castle in Sedan, France.
Château de Sedan is a fortress in the town of Sedan spanning over 35,000 square meters with multiple defensive walls several meters thick. The structure contains numerous courtyards and bastions that demonstrate its role as one of Europe's largest fortified strongholds.
Évrard II de La Marck-Arenberg acquired the priory site in 1424 and built a triangular manor with twin towers around the 11th-century church in six years. His son Jean de La Marck doubled the fortress, and Robert II de La Marck added the circular boulevard and cannon terraces from 1530. The principality passed to France in 1642, and Vauban built the Porte des Princes in 1699.
The fortress hosts exhibitions and events that bring its past to life for visitors from across the region. People come here to walk through the fortifications and encounter the stories embedded in these walls.
Visitors can explore the fortress either independently or with guided tours to learn more about its military architecture and history. Wearing comfortable shoes is advisable since walking through courtyards and along the ramparts can be demanding.
The castle was named France's favourite monument on 13 September 2023 and drew 145,300 visitors in 2024, the most of any site in the Ardennes. Its seven levels cover 35,000 square metres, and the bases of the Benedictine priory of Saint-Martin, mentioned in 1306, are still visible in the courtyard.
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