Château de Wailly, Historical castle in Conty, France.

Château de Wailly is a castle situated on a large country estate near Amiens, combining architectural elements from different historical periods. The property includes the main residence along with various outbuildings, surrounded by extensive grounds with woodland and open spaces.

Wailly entered the d'Hallewyn family through the 1506 marriage of Jeanne Mauchevalier and Jean Hallewyn. Alexandre d'Hallewyn is generally credited with rebuilding the castle, whose kitchen fireplace bore a 1629 coat of arms. In 1668 it passed to the de Croÿ family by marriage. Seized as a national asset during the Revolution and partly destroyed, it was restored after fires in 1895 and 1922, the latter by architect Pierre Parent.

The name Wailly entered the d'Hallewyn family through the 1506 marriage of Jeanne Mauchevalier and Jean Hallewyn; a kitchen fireplace once bore a 1629 crest of the Halluin arms. The seigneurie passed to the de Croÿ family in 1668 by the marriage of Marie-Joséphine d'Haluin and Ferdinand François Joseph de Croÿ. Part of the private property is rented out for receptions.

The château is a private property in Wailly, commune of Conty, south of Amiens, and is not open to the public; only the exterior and surroundings can be seen. Access is by an alley lined with outbuildings and a ruined stone hemicycle. Part of the building is rented out for receptions, so access is arranged with the owners.

The kitchen fireplace once carried a coat of arms dated 1629, attributed to the d'Halluin family and linked to Alexandre d'Hallewyn, credited with rebuilding the castle. The 20th-century restoration by architect Pierre Parent reused materials from the ruined buildings, so the present brick-and-stone facade incorporates older fabric.