Usk is a small market town on the River Usk, set between Newport and Abergavenny. It is not a full-day blockbuster, but it has enough history packed into a gentle walk to justify a detour if you are already in Monmouthshire.
The town's strongest sight is Usk Castle, a Norman ruin above the centre with gardens and views over the streets below. Back in town, the Priory Church of St Mary keeps the memory of a medieval Benedictine nunnery, while the Usk Rural Life Museum gives the place a grounded Welsh Borders texture.
Come for a slow morning rather than a packed itinerary. Usk's appeal is its scale: castle stones, churchyard, river, old shopfronts, and enough local history to make the town feel like more than a pretty stop between larger places.