Colwyn Castle, Motte-and-bailey castle in Glascwm, Wales.
Colwyn Castle is a motte-and-bailey fortification in Glascwm, Powys, consisting of an artificial mound that once held the main defensive structure. Around this elevated platform lies a flatter surrounding area where residential buildings and other structures once stood.
Ralph Tosny of Clifford built the fortress around 1093 to control the Elfael Uwch Mynydd region. It passed between Welsh and Norman hands several times throughout the medieval period.
The castle represents the Norman influence on Welsh military architecture, introducing the motte-and-bailey design to the local landscape.
You can explore the castle ruins by following marked paths that cross the site. Information panels along the way explain the main features and defensive layout.
The castle changed ownership multiple times between Welsh and Norman forces, serving as a meeting point for peace negotiations in 1232.
Location: Powys
Location: Glascwm
GPS coordinates: 52.17675,-3.30743
Latest update: December 12, 2025 23:30
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