Blaubeuren, which is close to Ulm, is easy to reach by train and motorway. Take a walk to Blautopf, the legendary source of the blue. About 20 liters of water per second gush from it from a depth of 2000 m and at the same time it is the entrance for cave divers into one of the largest cave systems in the Swabian Jura. Other sights are the hammer mill, the tanning district and the prehistoric museum.
Overnight place: blaubeuren