Château de Domecy-sur-le-Vault, Medieval château in Domecy-sur-le-Vault, France.

Château de Domecy-sur-le-Vault is a castle in Burgundy located on elevated grounds, displaying architectural features from multiple reconstruction periods throughout its history. The structure combines medieval foundations with later additions that transformed its appearance over the centuries.

The castle first appears in records in 1316 under the ownership of the d'Ostun family, who used it as their base. Over the following centuries, it changed hands repeatedly through marriages and sales among noble families.

The château's dining room held seventeen decorative panels that Odilon Redon painted in 1900–1901, his most radical compositions and a step from ornament toward abstraction. Their trees, leafy twigs and budding flowers float on an endless horizon in yellow, grey, brown and light blue, with the rectangular proportions of Japanese byōbu screens. Fifteen panels entered the Musée d'Orsay in 1988.

The château stands in Domecy-sur-le-Vault, near Sermizelles in the Yonne department of Burgundy. The sources document no opening hours, guided tours or visitor facilities, so access arrangements should be confirmed with the commune of Domecy-sur-le-Vault before travelling. The building is a private residence, not a museum.

Baron Robert de Domecy commissioned Odilon Redon in 1899 to paint 17 panels for the dining room; made in 1900–1901, they were Redon's most radical compositions, marking his move from ornamental to abstract painting. Fifteen are now in the Musée d'Orsay, which acquired them in 1988.