The Sint-Lambertuskerk was built between 1914 and 1916 and named after the Maastricht-born saint Lambert. At the time of its completion, it was the first church outside the old city wall. The church was designed by Hubert van Groenendael in neo-Romanesque style on a cruciform plan. The church was initially operated as a Roman Catholic parish church.
Soon after its completion in 1916, subsidence cracks developed in the structure. Ten years later, the church was restored and no further damage occurred until 1970. Beginning in 1970, portions of the structure began to sag and new cracks developed. Since 1985, the church has no longer been in use.
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.