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.

"[2] The pub was designated a Grade II* listed building on 26 April 1955,[3] 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.

The Cavaliers then broke the chain of the Dixton Gate with a crowbar and entered the town.

The action itself saw several members of the Parliamentary Committee for South Wales captured along with 200 officers and men.

[6] The Lonely Planet guide describes the Old Nag's Head as "an old-fashioned, no-frills, neighbourhood pub".