Château de Montfort, Castle ruin in Remilly Les Marais, France

Château de Montfort is a ruined castle near the marshes of Remilly-sur-Lozon, built from 1522 by the Marquetel de Montfort family. Its manor house combines a ruined Renaissance logis with two medieval towers, one topped by a square turret. The entrance is through a vaulted carriage gate and a pedestrian gate beside a postern, and an angled bartizan with a carved corbel survives on the south side.

The fief of Montfort belonged to the honour of Hommet in the first half of the 12th century. The present castle was built from 1522 by the Marquetel de Montfort family, magistrates ennobled in 1478, who kept it until 1755. Around 1840 the most weathered walls were demolished and the castle became a stone quarry. The ruins were listed as monuments historiques on 29 December 1978.

The name Montfort came from a small fief at Heugueville-sur-Sienne held by the Breton Montfort family; the Marquetel family, ennobled in 1478, brought the name here when they built from 1522. A local legend tells of a tunnel nearly three kilometres long linking the castle to the Butte Saint-Clair, carrying three mules loaded with gold. The openings called oubliettes are in fact the latrine pit.

The exterior of the ruins is open to visitors year-round, and Saint-Lô Agglo organises summer events there. The site lies near the marshes, 1.6 km northwest of the Saint-Martin church in Remilly-sur-Lozon. The gatehouse, guard house and outbuildings have been restored and host exhibitions; the seigneurial part remains as found.

A local legend claims a tunnel nearly three kilometres long runs from the Butte Saint-Clair motte to the castle, carrying three mules loaded with gold. Given the marshy ground between them, fed by the Venloue and the Lozon, the story is doubtful. What are taken for oubliettes are in fact the castle's latrine pit.