Prudhoe Castle is a ruined medieval English castle situated on the south bank of the River Tyne at Prudhoe, Northumberland, England. It is a Scheduled Ancient Monument and a Grade I listed building.
Wikipedia https://en.wikipedia.org/wiki/Prudhoe_Castle
Official Website https://www.english-heritage.org.uk/visit/places/prudhoe-castle
Coordinates 54°57'54.418" N -1°51'30.438" E