Chester Cathedral was originally a Benedictine abbey built on the remains of an earlier Saxon church dedicated to St Werburgh (the city's patron saint); it was shut down in 1540 as part of Henry VIII's Dissolution frenzy, but reconsecrated as a cathedral the following year. Despite a substantial Victorian facelift, the cathedral retains much of its original 12th-century structure. You can amble about freely, but the tours are excellent, as they take you up to the top of the panoramic bell tower.