Église Saint-Pierre d'Ancenis, Gothic church in Ancenis-Saint-Géréon, France.

The Église Saint-Pierre in Ancenis-Saint-Géréon is a Gothic church whose main entrance is through the bell tower, built on a Gallo-Roman base and supporting a 15th-century buttressed narthex. The nave opens onto the side aisles through round arches resting on massive columns, and the transept is the only stone-vaulted part, with Plantagenet hanging keystones from the late 15th century. The nave and apse date from the 16th and 17th centuries, and the clock tower from the 19th century.

Construction of the church began in the 13th century and extended across multiple centuries of building activity. It received official recognition as a historical monument in 1926, acknowledging its architectural importance to the region.

The apse's large arched window, set in a grid of leaded panes, shows figures in blue, red and gold; the glass is by Raphaël Lardeur and dates from 1946. A white banner above the entrance door reads "FETE PAROISSIALE", marking the parish festival.

The main entrance passes through the bell tower, whose base is Gallo-Roman and which carries a 15th-century buttressed narthex; the clock tower above it dates from the 19th century. The nave opens onto the side aisles through round arches on massive columns, and the transept is the only stone-vaulted part, with Plantagenet hanging keystones.

The transept is the only stone-vaulted part of the church, closed by hanging keystones in the Plantagenet style of the late 15th century. Look up at the vault to see these pendant stones, a detail found nowhere else in the building.