Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Old town of Regensburg with Stadtamhof' has mentioned 'Fort' in the following places:
Occurrence Sentence Text Source
From its foundation as an imperial Roman river fort, the city has been the political, economic and cultural centre of the surrounding region.
The oldest Celtic name given to a settlement near Regensburg was Radasbona, a site where a Roman fort was built around AD 90.
In 179, a major new Roman fort, called Castra Regina ("fortress by the river Regen"), was built for Legio III Italica during the reign of Emperor Marcus Aurelius.