Who knows what the Romans would make of their former outpost today being hidden beneath a restaurant on Hoher Markt, but the small expanse of Roman ruins dating from the 1st to the 5th century are thought to be part of the officers’ quarters of the Roman legion camp at Vindobona. You can see crumbled walls and tiled floors and a small but selective exhibit on artefacts found during the excavations. The ruins are part of the ‘Wien Museum’ municipal museum ensemble of Vienna.