The event known as the "Great Fire of London" occurred in September 1666 and is one of the most significant disasters in London’s history. It began in a bakery on Pudding Lane and quickly spread, destroying a large portion of the city over four days. The fire devastated approximately 13,200 houses, St. Paul's Cathedral, and numerous other buildings, leaving tens of thousands homeless. Although the loss of life was relatively low, the fire prompted significant changes in building regulations and urban planning. The Great Fire ultimately led to a rebuilding effort that transformed London into a more modern city.