Built of ochre-coloured stone, the small and massive church of Saint-Etienne in Fligny looks like a bulwark on its slightly elevated site in the middle of the village.

The first church in the village was destroyed as early as 1340, and after being rebuilt it was set on fire twice by imperial troops in 1521 and by troops of the Prince of Orange in 1555. After these bad experiences, it was finally fortified in 1570, and reinforced again at the end of the 17th century.

A tower supported the defence of the church at its head end; this tower was later shortened. Through it one reaches the escape room above the choir. Numerous embrasures can still be seen in the walls, which were reinforced with wrought-iron anchors and tie rods.

Inside, the church has a very beautiful atmosphere, although no particularly spectacular sights.