Blaustein is a municipality in the district of Alb-Donau Baden-Württemberg in Germany. It is situated on the Blau River, 6 km west of Ulm and has about 15,000 inhabitants.
It was created in 1968 after the union of Ehrenstein and Klingenstein and some more municipalities joined.
It is home to one or more prehistoric pile-dwelling (or stilt house) settlements that are part of the Prehistoric Pile dwellings around the Alps UNESCO World Heritage Site.
View to Löwenfelsen in Ehrenstein
The river Blau really shimmers blue sometimes. The name comes from the celtic name Blava. The blue colour comes from light scattering due to the high chalky spring water. River Blau is a left tributary to the Danube.
It was so so cold, that we hurried home again after these two photos.