Giant's Castle, Isles of Scilly
Viewed from the west. The defensive banks can be seen on the slope linking the fort to the mainland. | |
| Location | St Mary's, Isles of Scilly |
|---|---|
| Coordinates | 49°54′42″N 6°17′7″W / 49.91167°N 6.28528°W |
| OS grid reference | SV 925 101 |
| Type | Promontory fort |
| Area | 0.4 hectares (1 acre) |
| History | |
| Periods | Iron Age |
| Designated | 7 October 1976 |
| Reference no. | 1011935 |
The Giant's Castle is a promontory fort of the Iron Age, on St Mary's, Isles of Scilly, England. It is a scheduled monument.