Tretower Castle

Tretower Castle is a medieval fortress in Wales centered on a circular stone tower that rises four stories and features thick defensive walls. Surrounding this core structure are residential buildings that were added over time, creating a complex that served both military and domestic purposes.

The Picard family built the original earthwork fortress around 1100 to control the upper Usk Valley. Over subsequent centuries, this was replaced and rebuilt in stone, reflecting the evolving needs of its inhabitants for both defense and comfortable living.

The site reveals how a military stronghold gradually transformed into a stately residence, reflecting the changing priorities of the families who lived here. You can see this shift in how the buildings were adapted and expanded over centuries.

The site is managed by Cadw, an organization that handles access and provides information about the medieval structure. Wearing comfortable shoes is advisable since you will need to walk around the grounds, which are uneven in places.

The fortress cleverly incorporates the natural marshy terrain around it as part of its defense, with water features working alongside the built fortifications. This blend of natural landscape and human construction shows how medieval builders adapted to their surroundings.

Location: Cwmdu and District

Elevation above the sea: 89.8 m

Operator: Cadw

GPS coordinates: 51.88332,-3.18412

Latest update: December 8, 2025 19:50