The six Dacian Fortresses of the Orăștie Mountains in Romania were built in the 1st centuries BC and AD in the murus dacicus style [1]. These fortifications were created as protection against Roman conquest [2]. They played an important role during the Roman-Dacian wars [2].
Dacian Fortresses of the Orăştie Mountains

Also known as: Alai Mountains
| Type | Fortress/citadel |
|---|---|
| Period | 500 BC - 1 AD |
| Country | Romania |
| Coordinates | 45.6226° N, 23.3109° E |
Romania