The Karfax Bell Tower has a grand arched entrance with a ticket of 3 and can climb directly to the top of the tower. Steps are steep, with no access for the disabled. Located on the corner of Queen's Street in St. Olzhster, it is one of the best viewing spots for Oxford and its historical buildings. It is a 23-meter-high bell tower that was once part of St. Martin's Church in the 12th century.