Château de Seraing-le-Château, Medieval fortress in Seraing-le-Château, Belgium.

Château de Seraing-le-Château is a medieval fortress built with high defensive walls and multiple towers arranged according to Belgian military architecture patterns. The structure displays the robust stonework and strategically positioned defensive features typical of fortified residences from this period.

Built in the 13th century, the castle was largely destroyed by a major fire in 1869 and rebuilt around 1870. A second fire in 2003 ruined nearly all its wooden floors, and after eight years of restoration it reopened in 2023. In 1477 the prince-bishop of Liège gave Seraing to Guillaume de la Marck; the family kept the stronghold for more than three centuries.

The castle's operating name refers to Le Sanglier des Ardennes, the nickname of Willem van der Marck in the 15th century. After him, the fortress stayed in the Van der Mark family for more than three centuries. Since reopening in 2023 it has offered guest rooms and an events hall.

The castle reopened in 2023 after eight years of restoration and now operates as guest rooms and an events hall, so visits are tied to a stay or a booked event rather than a simple walk-in. From outside, the grey stone round tower, the square keep with its arched openings and the small conical-roofed turret can be seen from the surrounding streets of Seraing-le-Château.

The castle's operating name refers to Le Sanglier des Ardennes, the nickname of William of der Marck in the 15th century; his family kept the fortress for more than three centuries. A major fire in 1869 destroyed most of it, and a second fire in 2003 ruined nearly all the wooden floors. After eight years of restoration it reopened in 2023 with guest rooms and an events hall.