Old monastic site on a hillside overlooking Lough Oughter. Remains of buildings on the site include a 12thc. round tower and nave and chancel church dating from the 13thc. and 15thc.

The early monastery was founded by St. Maedoc of Ferns at the end of the 6thc. There are records of Erenaghs ( O'Farrellys) dying there in 1025 and 1095. Conaing, who died in 1059 was also coarb of Ferns. The monastery was probably refounded as Arrosian by St.Malachy 1143-8 subject to St.Mary's Abbey Kells. In 1432 and 1436 indulgences were granted for the building or repairing of the cloister, refectory and other necessary buildings. In 1844 the interior of the tower was excavated by Getty, however, his principle findings were of graveyard debris. The site is currently under the care of the Office of Public Works.

The presence of the three carved stones described above and two other stones with roll mouldings set high in the exterior of the south wall, are the only indication that a Romanesque church once existed here. The head set into the exterior wall is significantly larger than that in the interior. This, and the fact that it is moulded almost completely in the round, suggests that it was intended as a corbel. The dimensions of the interior head indicate that it may have been a voussoir, although its three dimensionality also suggests a function as a corbel. The piece of chevron probably formed part of a doorway.

Although there is no direct evidence for dating the round tower, the good quality masonry of the lower courses would point to the 12thc.