Chateau de Chatillon en Bazois, Medieval castle in Châtillon-en-Bazois, France.

The Château de Châtillon-en-Bazois stands on a rocky knoll within the loop of the Aron river and the Nivernais canal. Its pale gray and tan stone complex includes a tall square tower with a steep dark roof and spire, a higher central block with white-framed windows, and a main facade with a dark slate roof, a round stair turret and tall arched windows. A gated arched doorway sits in a recessed entrance at the base. The 13th-century defence tower, cellar and underground rooms remain visible.

The castle developed from the 13th to 17th centuries as a fortified site with multiple building phases. The original defense tower was later converted into living spaces while retaining key architectural features.

The gardens carry the Jardin remarquable label and were laid out by the landscape designer Paul de Lavenne de Choulot. The château has passed through named families: the sires de Châtillon-en-Bazois until 1370, then the Rochefort, Chandio, Pontailler, Béthune-Chabris and Pracomtal lines, and since 1972 the Sribny and Moreau-Sribny families.

The castle stands on a rocky outcrop within the loop of the Aron and the Nivernais Canal, so the approach and grounds are uneven. The 13th-century defence tower, cellar and underground rooms are among the elements protected since the 1989 listing. The park was laid out by Paul de Lavenne de Choulot.

A passage from the castle once led to the crypt of the church in Alluy, a neighbouring commune. The 13th-century defence tower, cellar and underground rooms can still be seen. The successive owners are recorded from the sires de Châtillon-en-Bazois until 1370 through to the Sribny and Moreau-Sribny families in 1972.