St Adwen's Church is a Grade I listed parish church in the Church of England in Advent. It is the only church in Cornwall to have eight pinnacles to its tower.
The north transept and the west tower date from the 13th century. The font is Norman. The south aisle is 15th century.
The church was restored in 1847-48 when the south chapel was demolished. From 1872 to 1874 the north walls of the nave and chancel, and the whole of the north transept was rebuilt. The pews were removed and open seating was provided.
The ecclesiastical parish is the responsibility of the Rector of Lanteglos-by-Camelford, and Advent has been associated with Lanteglos since medieval times.
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.