The Canterbury Tales (Middle English: Tales of Caunterbury) are an anthology of twenty-four short stories written in Middle English by Geoffrey Chaucer between 1387 and 1400. They are mostly in verse, and are presented as part of a fictional storytelling contest held by a group of pilgrims travelling from London to Canterbury to visit the shrine of Saint Thomas Becket at Canterbury Cathedral.
The Tales are widely regarded as Chaucer's magnum opus. They had a major effect upon English literature and may have been responsible for the popularisation of the English vernacular in mainstream literature, as opposed to French or Latin. English had, however, been used as a literary language centuries before Chaucer's time, and several of Chaucer's contemporaries—John Gower, William Langland, the Gawain Poet, and Julian of Norwich—also wrote major literary works in English. It is unclear to what extent Chaucer was seminal in this evolution of literary preference.