Chapelle du château de Fallavier, Medieval castle chapel at Château de Fallavier in Saint-Quentin-Fallavier, France.

The chapel of Château de Fallavier stands on the northern side of the fortress ruins above Saint-Quentin-Fallavier. Only parts of its walls and two pointed Gothic windows survive, set into the castle masonry. The small rectangular nave is open to the sky, and the windows frame the same view over the plain the castle once guarded.

The castle of Fallavier, held by the counts of Savoy, passed to the Dauphiné in 1240s conflicts; the chapel is tied to the 13th-century works of the Savoyard lords. It served the garrison and the castle's residents until the fortress was abandoned, leaving the chapel roofless within the ruins.

The chapel served the castle's residents and garrison, and its position against the northern wall let it be reached from inside the enceinte. Look for the surviving Gothic window openings, whose tracery frames show where the altar end stood. The building is now roofless, so the masonry of the chapel is read together with the adjoining defensive walls.

Access to the chapel is through guided castle tours offered on specific days and seasons. It is best to check ahead for current visiting possibilities and opening times.

The chapel's surviving Gothic window openings are cut into the northern wall of the enceinte, so the prayer space was built into the rampart itself rather than set apart. Look for the tracery fragments in the masonry, which mark the bay where the chapel stood.