The Church of the Holy Cross at Mwnt dates probably from the 13th century. The building was restored in 1853 and again after storm damage in 1917. A 1912 photograph shows the south windows in different positions.
The interior is a single chamber with deep-set windows and an unusual roof type. The font is 13th century; the hexagonal pulpit is Victorian.
Externally, the church is whitewashed rubble stone walls under a slate roof. The small, enclosed churchyard contains a number of graves; monumental inscriptions are held by Dyfed Family History Society.
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.