In good weather, definitely worth a trip:
The Blautopf in Blaubeuren is a spring where, depending on the light, the most incredible shades of blue and green can be seen. After the Aachtopf, the Blautopf is the second largest spring in Germany and has a huge underground cave system.
Blautopf is ideal for a walk around the small lake and through the forest.
As well as to enjoy a cup of coffee or a glass of wine in the café on the shore of the lake with the impressive scenery.