| DOLMENS | Megalithic structures, thought to be burial tombs |
| CRYPT | Burial tomb (5) |
| TRILITHON | Megalithic structure as at Stonehenge |
| TRILITH | Megalithic structure like an archway |
| STONEHENGE | Large megalithic structure on Salisbury Plain, erected between c3,000 and c1,600 BC (10) |
| BARROW | Megalithic burial mound; tumulus (6) |
| CROMLECHS | Megalithic tombs consisting of large flat stones laid on upright ones (9) |
| CROMLECH | Prehistoric megalithic tomb (8) |
| CARNAC | Site in Brittany of around 3,000 megalithic standing stones (6) |
| NURAGHE | Type of megalithic edifice found in Sardinia (7) |
| DOLMEN | Megalithic tomb with a large flat stone over upright ones (6) |
| GGANTIJATEMPLES | Megalithic ruined complex in Xaghra on Gozo (8,7) |
| IRONAGE | Part of the late Megalithic period, from c1500 BC (4,3) |
| STONECIRCLE | Megalithic monument (5,6) |
| VIERA | Dolmen de ___ (Megalithic tomb in Spain) |
| AVEBURY | Site in Wiltshire of the largest megalithic stone circle in the world (7) |
| SARSEN | Type of sandstone block found in Southern England, used by the megalithic builders of Avebury and Stonehenge (6) |
| MENHIR | Megalithic monument, often carved, erected by prehistoric people in the British Isles and parts of western Europe (6) |
| MALTA | Location of the Hagar Qim and Mnajdra megalithic temples, and the Auberge de Castille |
| SLIGO | Carrowmore Megalithic Cemetery is in this county in the Republic of Ireland (5) |
