The Babenberg Dynasty was a noble family that ruled over parts of Central Europe, particularly in what is now Austria, from the late 10th century until the late 13th century. They played a significant role in the development of the region, establishing Vienna as an important city and expanding their territories through strategic marriages and military conquests. The dynasty began with Margrave Leopold I and reached its peak under Leopold IV. The Babenbergs were known for their support of the Catholic Church and their contributions to the cultural and political landscape of medieval Europe. Their rule ended with the death of Frederick II in 1246, leading to a power vacuum in the region.