Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

Tomen Llansantffraid

A Scheduled Monument in Rhayader (Rhaeadr Gwy), Powys

We don't have any photos of this monument yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 52.2985 / 52°17'54"N

Longitude: -3.5153 / 3°30'55"W

OS Eastings: 296763

OS Northings: 267785

OS Grid: SN967677

Mapcode National: GBR 9J.X753

Mapcode Global: VH5CQ.0HYC

Entry Name: Tomen Llansantffraid

Scheduled Date: 19 July 1982

Source: Cadw

Source ID: 733

Cadw Legacy ID: RD142

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Powys

Community: Rhayader (Rhaeadr Gwy)

Built-Up Area: Rhayader

Traditional County: Radnorshire


The monument comprises the remains of a motte, dating to the medieval period (c. 1066 -1540 AD). A motte is a large conical or pyramidal mound of soil and/or stone, usually surrounded by either a wet or dry ditch, and surmounted by a tower constructed of timber or stone. Tomen Llansantffraid sits above the west bank of the Wye overlooking a probable crossing point. The site was known as 'Tower Hill' in the 18th century and was described in 1818 as having a surrounding ditch, no trace of which now survives. 19th and 20th century construction has resulted in the site being hemmed in, and cut into in places, by walling and other structures; the remaining open portion has been incorporated into a garden and landscaped. The motte is c.3.7m high and was probably originally c.12-15m in diameter. Antiquarian sources suggested a bailey on the east, but if this was ever present, no trace now survives.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive practices. The monument is well-preserved and an important relic of the medieval landscape. It retains significant archaeological potential, with a strong probability of the presence of both structural evidence and intact associated deposits. The site may have operated as a pair with Rhayader Castle (Scheduled Monument RD132), which lies c.230m to the north-north-east on the other side of the Wye.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.