Tags: Castle.
Castillion-sur-Agen was a medieval castle in the commune of Bon-Encontre near Agen in Aquitaine France.Built on the top of a small hill with sheer rock cliffs (the plateau de Castillou) it was fortified by both nature and artifice. According to the 12th-century chronicler Robert of Torigny Henry II of England besieged Castillion-sur-Agen in 1161. After just one week the garrison capitulated.