Petrelë Fortress, Medieval castle in Petrelë, Albania

Petrelë Fortress is a medieval castle perched on a rocky hilltop in central Albania. The triangular structure features two observation towers that provide views across the surrounding valleys and lowlands.

Petrelë Fortress was built in the 6th century under the Byzantine emperor Justinian I as one of the fortresses in the empire's defensive system. It took over the military role of the ancient Vila castle opposite once that site declined, controlling the Durrës–Tiranë–Elbasan branch of the Via Egnatia. In the early 14th century it belonged to the Topiaj family, whose emblem survives on one wall; the present building dates largely from the 15th century.

The castle was part of the signalling and defence system of Krujë Castle, the two communicating by fires lit on their heights. During Skanderbeg's fight against the Ottomans it was commanded by his sister, Mamica Kastrioti. The wooden cabin on the round tower now houses a restaurant.

The climb to the fortress is steep and requires a reasonable level of fitness, though the paths are walkable. Once at the top, visitors can explore the structure and find dining options available on-site.

The fortress was part of the signal and defense system of Krujë Castle, and the two communicated by lighting fires. During Skanderbeg's fight against the Ottomans it was commanded by his sister, Mamica Kastrioti.