Carfax Tower

Popularly known as Carfax Tower, St Martin's Tower is on the northwest corner of Carfax. It is all that remains of the 12th-century St Martin's Church.

St Martin's was the official City Church of Oxford, where the Mayor and Corporation were expected to worship, between about 1122 and 1896.

The tower is 74 feet (23 m) tall and no building in central Oxford may be built higher.