The Acropolis of Alatri in Lazio, central Italy, features precisely interlocking megalithic blocks without mortar [1] [2].
Acropolis of Alatri

| Type | Megalithic walls |
|---|---|
| Period | 1500 - 500 BC |
| Country | Italy |
| Coordinates | 41.7247° N, 13.3442° E |
Italy
The Acropolis of Alatri in Lazio, central Italy, features precisely interlocking megalithic blocks without mortar [1] [2].
| Type | Megalithic walls |
|---|---|
| Period | 1500 - 500 BC |
| Country | Italy |
| Coordinates | 41.7247° N, 13.3442° E |