The St Nicholas parish church was founded in the 1220s, with later additions including late 13th-century chancel and transepts and a 19th-century tower. The church is Grade I listed. Perhaps the most remarkable features of the church are the ornate rood screen, misericords and stalls which were transferred to the church from Chirbury Priory in Shropshire after the Dissolution of the Monasteries in the 16th century.
The south transept shows evidence of Montgomery's close association with the Herbert family. The centrepiece is the Elizabethan era tomb or church monument to Richard Herbert (died 1596) of Montgomery Castle, father of poet and Anglican divine George Herbert. This association is recalled in a memorial poem to a well-known local man J. D. K. Lloyd, who wrote this poem after the style of George Herbert.
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.