Where the River Main and the Rhine meet is the city of Mainz on one side, and Wiesbaden on the other. Mainz (pronounced MINE-zz) a short train journey from Frankfurt, and a lovely destination for a day trip with kids. It’s a very walkable city with a stretch of pedestrianized or low-traffic roads in the centre, and a lovely path along the banks of the Rhine.
Birthplace of Gutenberg
Johannes Gutenberg, European inventor of the movable-type printing press, was born in Mainz, and he printed his first books in the city. There is an extensive museum, with a vault containing two of the first Gutenberg bibles, as well as many examples of older hand-written books, and replicas of his original press. The audio guides are worth getting, and although they don’t have one geared for kids, the 20-minute highlight tour was interesting enough to keep our 7 year old engaged. But after 45 minutes he was pretty finished with this museum dedicated to books and printing, so unless your children are older or significantly interested, don’t expect this one to take all day.
Marktplatz and Altstadt
Thankfully the museum is centrally located in the Altstadt, near the central market square. Many of the buildings here have been restored as Mainz was heavily bombed in the Second World War. Starting in the Marktplatz, you can wend your way through picturesque little streets, in and around the cathedral. There are lots of cafes, ice cream shops, and restaurants. If you come on a Saturday, there is a huge market that fills the square and the streets above and below it. It’s a lovely festive atmosphere, so it’s worth catching the city on a Saturday if you can.
Mainz was the site of Roman habitation as well, being well situated at the confluence of two major rivers. There are remains of aqueducts and city gates dotted around the city, as well as the remains of a massive stone monument inside the Mainz Citadel, which we didn’t have a chance to visit this trip.
Banks of the Rhine and Mittel Rhine cruises
Follow the lovely pedestrianized streets down from the Marktplatz, past the cathedral, and head down to the banks of the Rhine by the old Fischtor (Fish Gate, which is no longer standing). There’s a set of steps to sit on, as well as a nice outdoor cafe serving wine and beer. You can watch the Rhine cruises stop here, as there are several jetties right here, or walk along the promenade. There are many Rhine cruises that work like hop-on, hop-off tour boats, running from 8am to 8pm, and taking in the middle (and most interesting!) portion of the Rhine from Cologne to Mainz (affiliate link).
Mainz is a super quick 15 minute train journey from Frankfurt, so it’s a perfect day trip location.