The first stone church in Orsa was built during the 13th century and maybe it replaced an old stave church. Around 1300 the church was built out in east direction and then maybe the sacristy came. In the middle of the 14th century the church was beamed out to the present beam. In the end of the 15th century it was built out to the present size, except the choir.
In 1607 they planned to build the bell tower at the western part of the church, and it was finished in 1639, but demolished and replaced by a new tower which was built in 1853, according to drawings by architect Ludvig Hawerman. The present choirs came when the church was rebuilt 1752–55. In 1979 the church was restored; the roof was rebuilt and a little museum was built in one of the tower rooms. The fore part of the floor was replaced by new limestone floor and the rest of the floor is made of sandstone from Orsa. At the restoration they found remains of two old floors made of stone and brick.
The triumph crucifix was made in Northern Germany in the late 1300s. The baptismal font dates from 1531.
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.