Protected monuments are monitored by the regional conservation of historical monuments (Regional Directorate of Cultural Affairs) and the agreement of the National Commission is required before any modification.
For the city of Montreuil:
Cellars:
- The medieval cellars, of the thirteenth and fourteenth centuries, located under numbers 88 and 90 of rue Pierre Ledent. Built in chalk with beautiful ribbed ogive vaults, they testify to the medieval past of the city.
Retail hotels:
- Thehotel de Longvilliers was built in stone in 1752 for Antoine de Bernes de Longvilliers, rue de la Chaîne, between courtyard and garden. The curved and counter-curved facade extends by the common closing the courtyard in horseshoe. The interior has retained its original layout as well as the decorations of rocaille style: panelling, fireplaces, ceilings, canvases above the door, both on the ground floor and upstairs, and a beautiful staircase with wrought iron railing. Residence of the sub-prefect of Montreuil since 1827, the hotel is the property of the General Council of Pas-de-Calais.
- TheLoysel Le Gaucher Hotel was built in 1777 for Charles-Albert Loysel Le Gaucher, an artillery officer. Of a rigorous classical order, the facades are decorated with heads carved in a beautiful arch key. Inside, the panelling decorated with military trophies or the door-tops evoking the four seasons and chimneys are well preserved. Recently bought by the city of Montreuil, a project for an interpretive centre of the British Empire’s high military district during the First World War is under consideration.
War Memorials:
- The War Memorial 1870-1871 was erected in 1912 on Gambetta Square, in a national context of commemoration of the deaths of the Franco-Prussian war, by the municipality, under the aegis of French remembrance, in tribute to the five Montrealer victims. It is a soldier of the Mobile Guard, due to the Ardennes sculptor Aristide Croisy, represented in motion, the gun in hand, ready to shoot at the enemy.
- The first world war memorial is located in Darnetal Square. The work of Beauvaisien sculptor Henri Gréber, it represents a winged victory embracing a hairy dead, like a pietà, and a stele on which are inscribed the names of the 108 children of Montreuil who died for the homeland. It was inaugurated on October 23, 1921.
- The monument to Marshal Haig recalls that in 1916, Montreuil hosted the British Army’s Grand Headquarters, headed by Field Marschall Douglas Haig. Shortly after his death in 1928, a national subscription was launched for the erection of a monument entrusted to Paul Landowki, a renowned sculptor, to pay tribute to the man who had contributed to the victory of the Allies. The equestrian statue is life-size in the classical tradition: the horse is immobilized and the rider in hieratic pose, in his uniform of Field Marshall. It was inaugurated on June 28, 1931.
- The underground complex German World War II was dug under the western front of the ramparts by the Todt Organization for two barracks units: the first from October 1943 to the summer of 1944; the second, begun, was not completed. This complex consists of 358 m of living tunnels and 315 m of traffic tunnels. Put in safety and property of the city, visits are organized punctually. A ranking proposal will be transmitted to the National Commission for Historical Monuments in Paris.
Before the meeting, the members of the CRPS were able to visit, under the leadership of Mr. Bruno Béthouart, Mayor of Montreuil, the monuments proposed for protection under the title of historical monuments and realize their interest in their historical and urban context.
For other locations in the department:
- The castle of Saint-Martin-Choquel, near Desvres, was built in 1778 for Louis-Pierre Merlin de Lottinghem by the Bolts architect Giraux Sannier, and completed by Albéric Mauduit ten years later. It is a simple building in Baincthun stone, of sober, even austere appearance, animated by a central bay projecting, which on the park side facade is three sides, which gives it a certain originality.
- The castle of Humeroeuille in the Ternois, is a large brick and stone house whose central part is dated 1717 by anchor irons, built for Jacques-Onulphe de Belvalet, coming from a family of aldermen of Arras and advisers to the Artois Council. Looted during the Revolution, the castle no longer retains any of the interior decorations, with the exception of a very beautiful staircase with wooden balusters carved in Hesdinian style. In the years 1820-30, two simpler symmetrical wings extended the existing structure.
- The manor of Doudeauville, on the edge of the Race, was built between 1613 and 1626. At the same time manors and agricultural farms, the manors of the Boulonnais formed a strategic line of defense between the Liane and the Course. The one in Doudeauville, built of bricks and covered with tiles, kept all its arrangements including the dovecote tower at the corner of the main building. Inside, the vaulted guardroom has retained its large fireplace and, upstairs, the noble room its fireplace and the panels of pilaster panelling.
- One of the most important castles in the Pas-de-Calais region, the Flers, built from 1776 to 1789, has been listed as a historic monument since 1965. For a better legal recognition, it was proposed to harmonize this protection by taking more into account the different parts of this ensemble: the castle and the courtyard of honour, the commons and the park, the vegetable garden and the orchard.