What is recorded here

Old Castle Upon Alun is an outbuilding from the Post Medieval period in the Vale of Glamorgan. It is not a grand castle or a public attraction. The name may have grown from a small strong room, a boundary marker or a local joke about power. Under either reading, the place still belongs to the valley and resists being reduced to a castle in a book.

The National Monuments Record of Wales records Old Castle Upon Alun as Outbuilding from the Post Medieval period. The saved point comes from the official national record. Inclusion does not by itself mean that the public may enter the place.

Old Castle Upon Alun is a Post Medieval outbuilding, likely associated with a larger estate or defensive structure, though specific builders or occupants are not recorded. Its inclusion in the National Monuments Record of Wales highlights its archaeological and historical value in understanding rural or defensive architecture of that period.

The historic-place record does not grant public access. Check current conditions and ownership before entering land or a building.