Gleaston Castle is a medieval building in a valley about 1 kilometre (0.62 mi) north-east of the village of Gleaston. The village lies between the towns of Ulverston and Barrow-in-Furness in the Furness peninsula, Cumbria, England. Gleaston Castle has a quadrilateral plan, with a tower at each corner. The largest of these, the north-west tower, probably housed a hall.

Muchland is a medieval manor in Low Furness in the county of Cumbria in northern England. The manor was the seat of the Lords of Aldingham, and included at its peak the villages of Bardsea, Urswick, Scales, Stainton, Sunbrick, Baycliff, Gleaston, Aldingham, Dendron, Leece and Newbiggin. The area also features the historic remains of Gleaston Castle, Aldingham Castle, Gleaston Water Mill, the Druids' Temple at Birkrigg, plus many prehistoric remains around Urswick and Scales.