Old Nags Head

The Old Nag's Head, Old Dixton Road, Monmouth, Wales, is a nineteenth-century public house, with medieval origins, which incorporates a "stone drum tower of the town defences constructed between 1297 and c.1315." The tower is the only "upstanding remains of the town walls of Monmouth." The pub was designated a Grade II* listed building on 26 April 1955, its "*" rating being due to "its interest as an early C19 public house which retains its character as well as a significant portion of a medieval gate-tower."

Source: Wikipedia