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Bamberg is a town in northern Bavaria, Germany, laid out over 7 hills where the Regnitz and Main rivers meet. Its old town preserves structures from the 11th to 19th centuries including the muraled Altes Rathaus (town hall), which occupies an island in the Regnitz reached by arched bridges. The Romanesque Bamberg Cathedral, begun in the 11th century, features 4 towers and numerous stone carvings.