were added to the west of the area in the 2nd and 3rd centuries. No development could be detected in the subsequent period during the Tetrarchy (293–313). In the course of the 5th century, the city was finally destroyed due to the rapidly advancing land seizure by barbarian tribes. Its ruins were almost completely erased by stone robbery in the following centuries, including for the construction of the Vauban Fortress Neuf-Brisach (1700). Praetorium/mansio and thermae The building complex of the late antique praetorium (II) consisted of two buildings—a combined mansio (hostel)/praetorium (headquarters), and thermae (baths)—and was located in the “Westergass” area, east of the Limesstrasse. The main building was oriented towards the highway, and was largely surrounded by a v-shaped ditch with a gate passage. It covered an area of . The much smaller bath an area of . Both were covered with tiled roofs, the roof tiles of which had been supplied by the Legio I Martia from Augusta Raurica. The buildings probably served as a road and rest station for state officials in transit, soldiers, and couriers of the imperial administration. In front of the Praetorium a well shaft was subsequently discovered. The praetorium and baths were probably built during the period between the rule of Constantine I or his sons and Valentinian I (330 to 340). They were in use until the 5th century. Post-roman use is proven by the indications of post holes. which come from half-timbered buildings that replaced the Roman buildings in the early Middle Ages. In their final phase, the buildings are likely to have made a neglected and run-down impression, as the residents and others disposed of their waste immediately in front of the entrances. Temple precinct The multi-phase temple precinct in the Biesheim-Kunheim corridor, excavated from 2003 to 2005, consisted of four Gallo-Roman temples with surrounding ambulatories (Buildings A, B, E, C), and ten other cult buildings, all of which were built in the 1st century AD. The precinct covered an area of around , making it one of the largest of its kind in this region. It may have been built over an even older Celtic sanctuary, as the area was surrounded by swamps and an arm of the Rhine in ancient times. The Celts preferred these features when setting up their holy sites, as they needed bogs and lakes to sink their offerings. The first wood and clay buildings