Vienna's history has been heavily influenced by its position astride the Danube, midway between the trade routes linking the prosperous ports of northern Germany with Italy. Its location at the crossroads of three great European cultures (Slavic, Teutonic, and Roman/Italian) transformed the settlement into a melting pot and, more often than not, a battlefield, even in prehistoric times.
Early Times -- The 1906 discovery of the Venus of Willendorf, a Stone Age fertility figurine, in the Danube Valley showed that the region around Vienna was inhabited long before recorded history. It's known that around 1000 B.C., the mysterious Indo-European Illyrians established a high-level barbarian civilization around Vienna. After them came the Celts, who migrated east from Gaul around 400 B.C. They arrived in time to greet and resist the Romans, who began carving inroads into what is now known as Austria.
Around A.D. 10, the Romans chose the site of modern-day Vienna for a fortified military camp, Vindobona. This strategic outpost is well documented -- its location is bordered today by Vienna's Rotenturmstrasse, St. Rupert's Church, the Graben, and Tiefer Graben. Vindobona marked the northeast border of the Roman Empire, and it functioned as a buffer zone between warring Roman, Germanic, and Slavic camps.