Built by the Byzantines outside the city, the fort measures 112 by and has walls 2.5 m thick.
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A temple for the worship of the gods Jupiter, Juno and Minerva. Features two tall columns atop a raised platform.
The 3,500-seat theater is in good condition and is used for contemporary productions.
Contains visible slabs used by traders to display their wares.
The centre of the city, surrounded by Corinthian columns.
Arch of Trajan
Built in the 3rd century to replace the original western gate, partially restored in 1900. A 12 m-high triumphal arch made principally of sandstone.
Dates from the 3rd or possibly the 4th century. Consists of a large semi-circular room flanked by two secondary rectangular rooms, and preceded by a U-shaped colonnaded portico surrounding three sides on an open court.