The state capital of Rhineland-Palatinate is one of the oldest cities in Germany. 38 BC, the Romans built the camp Moguntiacum on a Rhine bend. 50 years on, it became the seat of the commander of Upper Germania. In the 13th century Mainz flourished. Its archbishops were electors and chancellors. The cathedral with its six towers is one of the greatest buildings of its time. On the northeast side of the cathedral square stands the Gutenberg House, once the world's first printing workshop. This is also where the Gutenberg Bible, which was printed in 1450, is kept. The old town with its maze of streets and alleyways south of the cathedral is worth a wander.