Various, Encyclopaedia Britannica, 11th Edition…
“ Under the later Babenbergs Vienna was regarded as one of the most important of German cities, and it was computed that the duke was as rich as the archbishop of Cologne, or the margrave of Brandenburg, and was surpassed in this respect by only one German prince, the [v.03 p.0006] king of Bohemia. The interests of the Austrian margraves and dukes were not confined to the acquisition of wealth either in land or chattels. Vienna became a centre of culture and learning, and many religious houses were founded and endowed. ”
