Hereford is home to one of the most extraordinary sights in England, Mappa Mundi. The city straddles the Wye River and is known for its cattle and cider. The heart of the town is High Town just north of the river. The Hereford Cathedral is an 11th century structure that provides a lesson on the history of English architecture. The cathedral is best known for two ancient treasures that are housed here. The awe inspiring Mappa Mundi is a 13th century vellum map on calfskin. It has an intricate painting of the world as seen through the eyes of the era’s scholars. It is the largest and best example of this type of cartography in the world. The cathedral also houses the world’s largest surviving chained library, hooked to its shelves by long shackles. It has a unique collection of rare books and manuscripts including a 1217 copy of the revised Magna Carta. The cathedral comes alive with evensong most weeknights, and every three years plays host to the famous Three Choirs Festival.