The Grade I listed Abbey Church of St Mary the Virgin, Tewkesbury - commonly known as Tewkesbury Abbey - is a former Benedictine monastery and is now a parish church. Considered one of the finest examples of Norman architecture in Britain, Its striking Norman tower and long nave have dominated the Tewkesbury skyline for nearly 900 years. Alterations were made to the northern transept between the early and late 13th century and extensive rebuilding of the east arm occurred in the early 14th century.  Dendrochronology analysis suggests the North Transept was constructed around 1521.