 It is remarkable because until 1985 it was never suspected that a legionary fortress was built by the Romans so far east in Germanic enemy territory.The historic monument is located at a strategic site northeast of the actual town on the hill of "Kapellenberg", a terrain spur in the acute angle between the Main ("Moenus") and the Breitbach stream.Due to the course it follows in this area, the Main forms the so-called Main Triangle.