Släbro is without question one of Sweden’s greatest and most remarkable rock carvings site. Situated near the River of Nyköping the carvings were discovered 1984 and can be dated back to the Bronze Age. They are unique because they are carved in a most unusual way. There are etchings on some ten different surfaces with a total of some 700 figures, mainly frame and circle figures. Many are unique in design, in particular the large stylised human figures in a position of adoration. The characteristics commonly found throughout carvings in the South of Sweden are missing. What is more, the Släbro carvings seem to bear no similarity to any other ancient carvings that have been discovered throughout Europe. The carvings date from 1800 – 400 BC and thus far the meaning behind them remains something of a mystery as it has proven to be extremely difficult to interpret the motif as it appears in literally hundreds of different ways.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.