The establishment of the village of Breil in a meander of the Roya is part of the feudal regional society of the tenth-eleventh centuries. The village stands on a site surrounded by the river and two cliffs.
The Cruella watchtower overlooks the entire site with a wide view of the surroundings.
The castle situated on a slope of the ridge overlooked the village below the tower. In the oldest part of the village, the remains of a first medieval enclosure are visible.
A later rampart, flanked by towers, skirted the Roya river. In places, this rampart wall served as a foundation for the facades of houses. Part of the rampart still exists between the village and the Genoa gate (southeast).
Three fortified gates controlled access to the site. The Turin Gate, near the Upper Bridge, the Nice Gate south-west of the village near the Lower Bridge and the Genoa Gate, east of the village.
The Genoa Gate (Historical Monument) is the only one of the three gates of the village that remained in a configuration that dates from the 15th or 16th century on a probably older base. The nearby Saint-Antoine l’Ermite chapel (Historical Monument) is also the only one of the three remaining chapels of the village.