The museum displays include regimental artefacts and regalia, the importance of the Dukes of Beaufort, the earlier defences of Monmouth and its castle, HMS Monmouth, and the military activities of the regiment from its founding to the present.
Wales during war, the HMS Monmouth, and the role of the Royal Monmouthshire Royal Engineers in recent wars are also covered.
HMS Beagle | Monmouth | HMS Victory | HMS M31 | HMS Bounty | HMS M23 | HMS ''Humber'' | Geoffrey of Monmouth | Fort Monmouth | Monmouth County, New Jersey | James Scott, 1st Duke of Monmouth | HMS ''Bounty'' | HMS M27 | HMS M25 | HMS Investigator | HMS M33 | HMS ''Beagle'' | HMS Plumper (1848) | HMS Endeavour | Monmouth County | HMS ''Victory'' | HMS Royal Charles | HMS Queen Mary | HMS ''Plumper'' | HMS Britannia | HMS ''Investigator'' | HMS ''Express'' | HMS Duke of Wellington | HMS ''Britannia'' | HMS Ark Royal |