Grandpré Abbey, former Cistercian abbey in Faulx-les-Tombes, Gesves, Belgium

Grandpré Abbey is a former Cistercian abbey in Faulx-les-Tombes, Gesves. Its surviving entrance gatehouse has a round-arched passage closed by a black metal gate, grey ashlar masonry below, a carved stone panel with a statue in a shallow niche above the arch, and a slate roof topped by a bell-shaped cupola and stone sphere. The farm buildings and the mill, once powered by the Samson brook, also remain.

Founded in 1231 as a daughter house of Villers-la-Ville, on a site where a Villers grange had stood since the early 13th century, the abbey was established by Henry I, Count of Vianden and Marquis of Namur, and his wife Margaret de Courtenay, in memory of her brother Philip II, who died in 1226 during the Albigensian Crusade. The church was dedicated in 1232. The community never numbered more than 20 monks and founded no daughter houses; it was plundered by Dutch troops in 1740, suppressed in 1796 and sold to the Paris and Douai financier Jean-Baptiste Paulée, and the conventual buildings were demolished by 1807.

The name Grandpré means "large meadow", describing the Samson valley site. The abbey was founded in memory of Philip II, Marquis of Namur, who died in 1226 during the Albigensian Crusade; his sister Margaret de Courtenay and her husband Henry I of Vianden provided the endowment. The gatehouse, restored in 1771 under Abbot Étienne Defrenne, carries a statue in a niche above the arch.

The buildings are privately owned and closed to visitors; only the gardens can be entered, on request and for a small contribution to the owner's charitable works. The gatehouse, farm buildings and mill are best seen from the public road through Faulx-les-Tombes. The Samson brook still crosses the site.

The gatehouse seen today was restored in 1771 under Abbot Étienne Defrenne and listed in 1956; the mill's façade and roof and a subterranean channel followed in 1992 and 1997. The Samson brook still crosses the site, the stream that once turned the abbey mill.