Bamberg is a UNESCO World Heritage site. See whc.unesco.org/en/list/624; and thesalmons.org/lynn/world.heritage. The US Army has a garrison here, with a fine homepage to orient newcomers at www.bamberg.army.mil/sites/local/.
The cathedral and square are in the Old Town. These sections are often up a substantial hill. en.wikipedia.org/wiki/Bamberg. When lost in an old city, aim for the high ground. Just keep driving up. Cathedrals, main squares, often there to facilitate defense.
The City is proud of its beer-brewing tradition - beginning at monasteries in the 10th Century. And for its outdoor frescoes, on the sides of entire buildings, look at this sample on the riverside . For more on frescoes, this technique of painting on wet (or dry) plaster, that lasts for centuries if done right (also done indoors), see www.noteaccess.com/MATERIALS/Fresco.
Bamberg is also among the cities of Germany cited by the Jewish traveler-scholar, Benjamin of Tudela, from Tudela, Spain, travels 1165-1173. See On the Road to Paradise, article focusing on the Baghdad experience of Benjamin of Tudela, and the tolerance, wisdom and mercy of the cultural leaders there at the time, Archeology Odyssey magazine.m May-June 2000, see http://www.bib-arch.org/archaeology-odyssey.asp. The travels are online at The Travels of Benjamin of Tudela, http://www.sacred-texts.com/jud/mhl/mhl20.htm. He wrote a hundred years before Marco Polo left for China. He traveled 2000 miles, visited more than 300 cities. His book is entitled, Sefer ha Massa'ot, or The Book of Travels.
Medieval Jewish communities of scholars, families, all on good terms with each other and their neighbors, are noted by Benjamin of Tudela on the Moselle River, including "Coblence, Andernach, Kaub, Kartania, Bingen, Worms, and Mistran." Then, " [along the] Rhine, from Cologne, where the empire commences, unto Cassanburg, the frontier of Germany, which is fifteen days' journey, and is called Ashkenas by the Jews." Travels at p. 425. Ashkenazi.