The visible remains of the fort are the porta principalis sinistra and the porta praetoria, the fort's eastern and southern gates.
The first palisade fort was built under Domitian by the cavalry unit ala I Tungrorum Frontoniana, transferred from Aquincum. This was replaced in the first third of the 2nd century by a stone fort (178 m x 200 m). Its walls were reinforced with two towers on each side and the fort was surrounded with triple ditch. The principia and parts of a few other buildings have been excavated. Major rebuilding only took place following the Sarmatian raid of 333, when it received fan-shaped corner towers and its two side-gates were walled up with horseshoe-shaped towers. Finds indicate that the castellum was still used in the 5th century. The vicus militaris around the fort now lies under the modern town of Nagytétény. A key find from the site is a Mithraic relief.
The visible remains of the fort are the porta principalis sinistra and the porta praetoria, the fort’s eastern and southern gates.
