The Arkad Beer­gar­den and CafA. The gate was built in the sec­ond half of the 3rd cen­tu­ry. It was the Roman legion cam­p’s main gate look­ing for Danube riv­er. This was a three-span struc­ture. Both two edges a storey, octag­o­nal tow­er flanked. The mid­dle pas­sage used for the car traf­fic, the two extremes made for pedes­tri­ans. Across this was acces­si­ble the Danube bridge.