St. Michael's Church with its famous staircase towers majestically over Schwäbisch Hall's marketplace. It was consecrated on 10th February 1156 by the Bishop of Würzburg. From this period only the four bottom storeys of the Romanesque west tower have survived, along with the porch. From here the Archangel Michael – a stone sculpture from the late 13th century – watches over the trading on the marketplace and over the town as the guardian of justice. Outstanding works of Late Gothic art in the church interior include the large Netherlandish Passion Altar in the choir (c. 1460) and the Holy Sepulchre with its impressive mourners (1455/56).
From the marketplace the 53 steps of the vast staircase lead up to the Romanesque vestibule of the church, and another 160 steps take you up through the tower to the bell chambers and the former tower watchman's dwelling, which affords a magnificent view over the historic town centre. The staircase was constructed between 1507 and 1510/1511.
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.