Okehampton Castle 
“Once the largest castle in Devon, nestling in the foothills of Dartmoor. Reputedly haunted and mentioned in the Domesday Book.…” – official site
Ease by public transport:
Unknown
“Once the largest castle in Devon, nestling in the foothills of Dartmoor. Reputedly haunted and mentioned in the Domesday Book.…” – official site
Ease by public transport:
Unknown