Église Saint-Nicolas, Catholic church on Place Dalton, Boulogne-sur-Mer, France.

Église Saint-Nicolas stands on Place Dalton in the lower town of Boulogne-sur-Mer. It is built of stone as a basilical cross-shaped church with a nave flanked by two side aisles, a transept and a choir; the oldest parts are the choir and the crossing. A low lantern tower over the crossing carries a massive slate-covered spire, and the blind facade holds a niche with a statue of Saint Nicholas by John Hopkins.

The building was first documented in 1208 and has shaped the cityscape since then. After severe damage during the siege by Henry VII in 1492, it was substantially rebuilt and acquired its current form.

The church is dedicated to Saint Nicholas, patron saint of sailors, in the lower town where fishermen and seafarers traditionally lived. A niche on the blind facade holds a statue of Saint Nicholas carved by John Hopkins. The building has been listed as a monument historique since 10 June 1926.

Place Dalton hosts a market on Wednesday and Saturday mornings, allowing visitors to combine sightseeing with local shopping. The central location makes it easy to pair the church visit with other town center attractions.

The oldest parts of the church are the choir and the crossing of the transept, which survived the sack of the lower town in 1492. The nave was rebuilt in the 18th century by the Boulogne architect Giraud Sannier because it had become too small and unsafe. The blind facade holds a niche with a statue of Saint Nicholas by John Hopkins.