Château de la Roche-Mailly, Historical castle in Requeil, France.

Château de la Roche-Mailly is a castle with cylindrical and rectangular towers displaying gothic-style elements in its design. The roof and facade structures demonstrate the construction quality and architectural details typical of the 19th century.

The castle was completely rebuilt between 1836 and 1842 according to designs by architect Pierre-Félix Delarue for Count Adrien de Mailly Nesle. This reconstruction represented the creation of a grand residence aligned with the architectural ideas of that period.

The estate was long called La Roche-de-Vaux, after the seigneurie held by the La Chevrière family in the Middle Ages. It took its present name from the Mailly family, into which it passed through the 1701 marriage of Louise Madeleine Josephe Marie de La Rivière to Joseph de Mailly, marquis d'Haucourt. The Gothic-inspired facade ornament dates from the 1836–1842 rebuilding.

The castle stands on the territory of Requeil in the Sarthe department, within the Pays de la Loire region. It is reached by road from Requeil; the grounds and the 1787 and 1840 garden with its orchard and alleys are private property. Visitors view the facades and roofs, listed as monuments historiques since 29 October 1976, from the public road outside.

The pleasure garden, with its orchard and alleys, is dated to 1787 and 1840 and is listed in the general inventory of cultural heritage. It predates the 1836–1842 rebuilding of the château by Pierre-Félix Delarue, so its layout survives from the earlier La Roche-de-Vaux estate.