Allt-yr-Odyn, Rhydowen, is a large three-storey country mansion, dating from about 1827, with a hipped slate roof and a number of chimney stacks. The front of the house is seven bays wide and is rendered. The main entrance is via the central front porch; this has six Doric columns (two of which are engaged) supporting the entablature. Above the porch is a large arched window. To the rear of the house is a service courtyard. The house stands in fine contemporary woodland gardens (nprn 86773).

RCAHMW, January 2011