Mainz Walking Tour Cathedral Gutenberg and Rhine Promenade

This is a local-led Mainz walking tour on a fixed route, not a bus loop or a museum-only visit. You follow Marktplatz, the Cathedral of St. Martin, the Nagelsäule and market fountain, the Altstadt, the Sanctuary of Isis and Magna Mater, optional Gutenbergplatz, and the Rhine promenade. The Gutenberg Museum is optional at the end: the guide briefs you on the printing story and can leave you nearby; entry is extra and the guide does not go in unless you ask. You finish with a clear map of the city and where locals actually drink wine — not a script of dates.