The impressive church of Tensta is one of the oldest brick churches in Uppland. The oldest parts originate from the late 13th century. The sacristy and porch were built during the next century and arches between 1420-30.
There are many fine medieval frescoes in the church. These are signed by the painter Johannes Rosenrod in 1437. They depict various religious themes including scenes from the life of St. Birgitta. The altar was made by Bernt Notke workshop in Lübeck in 1480’s. The pulpit dates from 1749. Outside the church stands also a runestone.
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.