Lärbro Church was probably built between 1260-1280. The unusual octagonal steeple was erected in the 1300s. The interior date made mainly from the times after Reformation. The murals in the church vaults are originals. In the chancel floor, by the chancel portal, there is a tombstone in memory of Nicolaus (Nils) Taksten from 1274.
To the west of church is a defence tower, which dates from the 12th century. It was built several storeys high with a lavatory on the third floor. Today, the defence tower is used as a belfry.
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.