Ely Cathedral, with its 14th century Octagon tower and unique wooden lantern, is regarded as one of the wonders of the medieval world. The current building dates from 1083 and was expanded over several centuries. As one of the richest monasteries in England at the time, the 13th century presbytery featured some of the most fashionable architecture of the time.

On the floor is an inscribed paving stone marking the original tomb of St. Etheldreda. The Saxon Princess from East Anglia founded a monastery on the site in 673.