Alabum
Coordinates: 52°00′04″N 3°47′36″W / 52.00119°N 3.79341°W Alabum was a fort in the Roman province of Britannia Superior, of which Roman Wales was a part.
Its remains are located at Llanfair-ar-y-bryn in the north of Llandovery in the Welsh county of Carmarthenshire.
The 5.25 acres (2.12 ha) fort was probably built in the 1st century with an enclosing rampart and double ditch. a quadruple ditch was dug on the north-east side to protect the flat terrain in that direction. A stone revetment was later added. A military bath house lay between the fort and the River Bran. Occupation lasted into the 4th century.
A faint earthwork can still be seen around the church of St Mary which has Roman tiles incorporated into its fabric.
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