5 Sights in Monmouthshire, United Kingdom (with Map and Images)

The Church of St Martin, Cwmyoy, Monmouthshire, Wales, was begun in the 12th century, although most of the current structure dates from the 13th century. The church is most notable for its extreme tilt, the result of a landslide. This has led to many attempts to strengthen the church and prevent its collapse, through the use of massive tie beams and buttresses. The church is in the Gothic style, and has a chancel, nave, south porch, and western tower. A round-headed north window dates to the 12th century, and the nave roof has been dated to the late 13th or early 14th century. St Martin's is a Grade I listed building and an active parish church. It is dedicated to St Martin of Tours.

Wikipedia: St Martin's Church, Cwmyoy (EN)

The Doward, is an area in the parish of Whitchurch in south Herefordshire, England, consisting of the hills of Little Doward and Great Doward and extensive woodland. It is within the Wye Valley Area of Outstanding Natural Beauty, on the border with Monmouthshire, Wales. The area, about 3 miles (4.8 km) north-east of Monmouth, is shrouded in legend and King Arthur's Cave is in the vicinity.

Wikipedia: The Doward (EN)

The Church of St Michael, Llanvihangel Gobion, Monmouthshire is a parish church with datable origins to the 15th century. There is no record of a Victorian restoration, although one must have occurred, but there is documented evidence of a "light" reconstruction in 1925. Since the date, the church has barely been altered. It now is closed, having been declared redundant and is in the care of the Representative Body of the Church in Wales. It is a Grade II* listed building.

Wikipedia: St Michael's Church, Llanvihangel Gobion (EN)

The Church of St Michael and All Angels is the former parish church of Gwernesney, Monmouthshire, Wales. It is a Grade I listed building. In 2017, the church was vested in the care of the Friends of Friendless Churches.

Wikipedia: Church of St Michael and All Angels, Gwernesney (EN)

The Redbrook Incline Bridge is a nineteenth-century tramway bridge that crosses the B4231 road at Redbrook on the England–Wales border. The bridge straddles the border and stands in the counties of Monmouthshire in Wales and Gloucestershire in England. It was built as a branch line from the Monmouth Tramroad to transport coal to the Redbrook Tinplate Works and was constructed on a significant incline as a consequence of its standing well below the main tramway. It is a remarkable survival of 19th-century industrialisation in the Wye Valley and is both a Grade II* and a Grade II listed structure, and a scheduled monument.

Wikipedia: Redbrook Incline Bridge (EN)