Annus Mirabilis is a poem written by John Dryden and published in 1667. It commemorates the year 1666, which despite the poem's name 'year of wonders' was one of great tragedy, involving both the Plague and the Great Fire of London. Samuel Johnson wrote that Dryden used the phrase 'annus mirabilis' because it was a wonder that things were not worse.
The poem contains over 1200 lines of verse divided into 304 quatrains. Each line is ten syllables long, with an 'ABAB' rhyming scheme, a pattern known as a decasyllabic quatrain.
Dryden's poem narrates the events of the Great Fire of London, from its beginning at night in the bakery on Pudding Lane, to its final extinguishment after King Charles II ordered houses to be torn down or blown up with gunpowder to create 'fire breaks' which prevent the flames from spreading.