1666 Great Fire of London begins
In the early morning hours, the Great Fire of London breaks out in the house of King Charles II's baker on Pudding Lane near London Bridge. It soon spread to Thames Street, where warehouses filled with combustibles and a strong easterly wind transformed the blaze into an inferno. When the Great Fire finally was extinguished on September 6, more than four-fifths of London was destroyed. Miraculously, only 16 people were known to have died.
On a side note, in 1945, the Instrument of Surrender was signed on board the USS Missouri, thereby ending WW2 in the Pacific.... the world was (generally) at peace after six years.