If you'd love to inject a little more culture into your escape, put Museum für Antike Schiffahrt on your list. See if there are any guided tours or simply roam around at your own pace.
Museum für Antike Schiffahrt is the perfect place to begin your day of discovery in Altstadt Mainz. This museum is recommended by fellow travelers, but it isn't the only thing to do here. Save time for other sights like Mainz Cathedral, Gutenberg Museum, and BRITA-Arena to really experience what the area has to offer.