Chester Cathedral dates back to 907 AD and has been rebuilt three times. The last construction began in 1250 and lasted for over 250 years. Since then the cathedral has remained essentially unaltered (restoration work was carried out in the 19th century and a stand-alone bell tower was added to grounds in 1975).
There is a small admission charge to enter the cathedral. Each visitor receives a complimentary audio tour. Guided tours are available but must be booked in advance. They are free to paying visitors and can be tailored to suit the interests of the group.