Annus horribilis
Dryden in his poem Annus Mirabilis counts the Great Fire as one of the wonders of that year because the city was ‘miraculously’ preserved, ie much of London was saved from the flames thanks to the concerted efforts of its citizenry. (Even some of the nobles pitched in to help with the firefighting, notably James, Duke of York, the future James II). The other two miracles were a couple of sea battles against the Dutch, as I recall.