Lokrume Church history dates back to the 12th century. The northern wall of the presently visible church nave dates from this century. Parts of the northern wall of the choir also date from this church. However, later reconstructions have reshaped the church and nothing more remains of this first, Romanesque church. During the second quarter of the 13th century, the larger part of the presently visible choir was built, with inspiration from churches in Visby. Slightly later is the rest of the nave and the sacristy. The last phase of the reconstruction was during the 1270s, when an earlier Romanesque tower was replaced with the presently visible one. The rebuilt church was inaugurated in 1277.
Internally, the church is sparsely decorated by frescos from the 1270s. During a renovation in 1957-62, fragments of 15th-century frescos were also discovered under layers of white paint, but these were too damaged to be restored. The frescos in the sacristy date from the 18th century. The altarpiece is from 1707, while the pulpit dates from the second half of the 17th century. The church furthermore has a triumphal cross from circa 1200, and a baptismal font by the artist known as Majestatis, dating from the later part of the 12th century. In the choir stands a choir bench made of parts dating from the 17th and 13th century respectively. Also in the choir is the tombstone of a judge name Gervid Lauks, dated 1380.
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.