The Canterbury Tales are:
A collection of stories written in Middle English by Geoffrey Chaucer at
the end of the 14th century. The tales (mostly in verse, although some
are in prose) are told as part of a story-telling contest by a group of
pilgrims as they travel together on a journey from Southwark to the
shrine of Saint Thomas Becket at Canterbury Cathedral.
He uses the tales and the descriptions of the characters to paint an
ironic and critical portrait of English society at the time, and
particularly of the Church.
You can read the entire Tales in Middle English or Modern English at
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Image credit: https://commons.wikimedia.org/wiki/File%3AGeoffrey_Chaucer_-_Canterbury_Tales_(1478)%2C_frontispiece_-_BL.jpg
Text credit to The Open Library's description of the work.