Roman lighthouse & the church of St. Mary-in-Castro

This Saxon church was built on the Castle Hill in the 10th century. The church of St Mary in Castro as it stands today is a much restored example of a Saxon church dating from around 1000 AD. It is surrounded by a large late Saxon cemetery which suggests that this church replaces an earlier building. The bell tower was originally a Roman lighthouse built in first century AD and is the oldest standing building in the British Isles.