Gleaston Castle ruins near Ulverston in Cumbria represent a remarkable 14th-century enclosure castle built in the 1320s-1330s by the de Harington family. Positioned on a scenic hilltop valley between Ulverston and Barrow-in-Furness, the castle features a quadrilateral plan with towers at each corner and remarkably well-preserved stonework. The fortress served as the primary seat of the Haringtons until 1458, when the family line ended and ownership transferred to the Bonvilles; subsequently it fell into disrepair. The castle now stands as a scheduled monument and Grade I listed building, with three towers and curtain walls surviving to impressive heights, though unsafe for public entry due to structural concerns.
