Tewkesbury Abbey - Gloucestershire Historic
The Abbey is over 900 years old and is one of the largest parish churches in England, and larger than many cathedrals. The impressive tower is the largest Norman tower in existence (until 1559 had a wooden spire on top as well). Tower tours available on some Sundays in summer. Guided tours often available on weekdays. See website for details of services. Free admission, although donations are welcome.