Prefecture hotel of Oise, Departmental Prefecture and historical monument in Beauvais, France.

The Prefecture hotel of Oise stands at 1 place de la Préfecture in Beauvais, on the site of the abbey of Saint-Quentin founded in 1067. Its long facade of pale stone is divided into bays by darker panels, with a projecting central section under a curved pediment and a slate mansard roof with dormer windows. Two abbey remains survive: the 12th-century abbot's chapel and an 11th-century side wall of the abbey church.

Bishop Guy of Beauvais founded the Saint-Quentin abbey in 1067; its church was dedicated on 4 October 1069 in the presence of the archbishop of Reims and six bishops. The abbey followed the rule of Saint Augustine. Deconsecrated at the Revolution, it became a manufactory, and the departmental council bought it in 1823 to house the prefecture.

The building preserves a chapel from the 12th century and walls from an 11th-century abbey church. These remains show the religious past of the place, which you can still see in the architecture today.

The prefecture stands at 1 place de la Préfecture, northwest of Beauvais city centre. Its grounds are bounded by the Saint-Quentin river to the west and by the Sainte-Hélène stream and the Gonard canal to the east; the Oise departmental council lies to the north. The building is a working administration, so visitors should confirm access before coming.

The garden is listed in the pre-inventory of notable gardens. The site keeps two medieval remains: the 12th-century chapel of the abbot and a gutter wall of the 11th-century abbey church. The abbey was founded in 1067 by Bishop Guy, and its church was dedicated on 4 October 1069.