The church in Westen is one of the oldest church buildings in the district of Verden.
The core of St. Anne's Church dates back to the beginning of the 13th century and thus to the Romanesque period.
The church in Westen bears the signets open church and cycle path church.
Westen belonged to the diocese of Verden from time immemorial. The counts of Westen had built a castle, to which a chapel was probably also attached. However, the line of counts died out. In 1219, Bishop Yso of Verden bought the county. Villa Westen was first mentioned in the purchase contract. After a monastery courtyard was built in Westen, the old castle was probably used exclusively as a chapel.
Visitation records from 1585 provide the first information about the ecclesiastical care of the village. The Westen chapel was a branch of the parish of Dörverden. It was only later that Westen became independent, received its own priest and the chapel was elevated to a church. The tower was probably built as a defensive tower. St. Annen is therefore one of the few churches in Lower Saxony with a round tower.