Tibiscum (Tibisco, Tibiscus, Tibiskon) was a Dacian town mentioned by Ptolemy, later a Roman fort and municipium.

Located at the junction of two of the most important imperial roads that connected the capital Ulpia Traiana Sarmizegetusa with Dierna and Lederata, the city and the fort developed due to the fertile plain of the Timiş river and the commercial and strategic position occupied.

By the end of Trajan's First Dacian War in 103 AD a detachment from a Roman unit, probably Legio IV Flavia Felix, had built here a castellum of approx.

[7] Under Hadrian the walls were rebuilt in stone and an irregular unit, the Numerus Palmarenorum, Syrian archers from Palmyra, was also stationed here.

Later in the 2nd century AD under Antoninus Pius an irregular unit of cavalry spearmen Numerus Maurorum was also garrisoned and an extension to the west and south of the fort was made to house the three auxiliary cohorts.