During the Albanian Revolt of 1432-1436 the city was unsuccessfully besieged by Andrea Thopia and Ottoman rule was restored.

Mehmed II "The Conqueror" himself could not break the fortress' small defenses until 1478, 10 years after the death of Skanderbeg.

Within the fortress is located one of the main attractions, the National Museum "George Castroti Skanderbeg" (Muzeu Kombetar "Gjergj Kastrioti Skenderbeu" in Albanian).

Inside the museum a lot of original bibliography, documents, objects and authentic reproductions that represent the history of Albanian people in the fifteenth century are displayed.

It reveals the sustainable methods of tools, food, drink and furniture production in a typical household.