Entrace in the Hofburg (Michaelertrakt).

The centre of the Michaelerplatz has been widely investigated by archaeologists. At this site, traces of a Roman legionary outpost (canabae legionis) and of a crossroad have been found. The centrepiece of the current design of the square is a rectangular opening that evokes the archaeological excavations at the site and shows wall remains that have been preserved from different epochs.