The Castle of Park is a 16th-century L-plan tower house near Glenluce, in the historic county of Wigtownshire in Dumfries and Galloway, Scotland.

[3] The building was extended in the 18th century,[2] and was used by the Hay family until Sir John Dalrymple-Hay sold the Park estate in 1875;[1] it was then left uninhabited.

[citation needed] A program of restoration was carried out in the 1950s and 1960s by the Ministry of Public Building and Works, including removal of the 18th-century wings.

[2][5] The antiquarian Richard Pococke visited in 1760, and described, "The Park, Sir Thomas Hay's, a castle most beautifully situated on a ridge which is at the foot of hill, having towards the river a steep hanging ground covered with wood, and a more gentle descent southwards to the meadows on the bay adorned with trees".

[3] Unlike earlier examples such as Drum Castle,[8] the walls are hollowed out with additional staircases and, to quote the 1898 description, "commodious closets".