The Dorëzi Fortress is the oldest in the Tirana county and dates to the 9th century BC. The first archaeological expedition was performed in 1951. The ruins of the fortress are to be found in one of the highest hills of the Krrabë, at about 479 metres above sea level. It is thought that Dimale may have been situated in the Dorëzi Fortress.
The surrounding wall is in its southern part, and is 300 metres long from east to west. The fortress construction seems to have had three phases—the first with raw stones, the second with carved blocks placed with no mortar (Hellenistic period) and the third with crushed stones and the use of mortar (4th–6th centuries AD). One can see the main entrance of the fortress. The presence of old vases that date to those centuries suggests that the site was inhabited until at least the 4th–6th centuries AD.
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The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.