Prestonbury Castle is an Iron Age Hill fort on the north east edge of Dartmoor in Devon, England. Situated on a massive hilltop some 240 metres above sea level overlooking the Teign Valley, it is located near two other hill forts (Cranbrook Castle and Wooston Castle) both of which lie about 2 km (1 mi) away.
Coordinates: 50°41′46″N 3°46′33″W / 50.6962°N 3.7758°W