I researched Regensburg a little and found it's well known in Europe for it's Gothic architecture. Pictured above is "Steinerne Brucke" the 12th century stone bridge in Regensburg. I looked up their hometown on the net and found this:

Regensburg has a lot to offer. The Cathedral of St. Peter, for example, is the most important Gothic structure in Bavaria. Wherever you go you feel as if you are strolling through the centuries of a bygone age. Regensburg is a unique, superbly preserved city straight out of the Middle Ages.