The Great Fire of London, a catastrophic event that reshaped the city's history, ignited in the early hours of September 2, 1666. Originating from a bakery on Pudding Lane, the fire rapidly engulfed the wooden structures of medieval London, fueled by a prolonged dry spell and strong winds. Over four days, the blaze decimated the heart of the city, leaving an estimated 70,000 of its 80,000 inhabitants without homes, though it remarkably claimed few lives. King Charles II and his brother, James, Duke of York, took active roles in combating the fire, even as the flames threatened the survival of London itself. The disaster's aftermath prompted a significant urban renewal, leading to the reconstruction of the city with stone buildings, wider streets, and the creation of the first professional firefighting service. The fire also had profound impacts on insurance, architecture, and urban planning. Sir Christopher Wren, tasked with much of the city's redesign, left a lasting legacy through iconic structures like St. Paul's Cathedral. The event catalyzed changes in building regulations that emphasized fire resistance, fundamentally altering the city's architectural character. Today, the Great Fire of London remains a symbol of resilience and transformation, serving as a reminder of the city's ability to rebuild and emerge stronger from adversity. It marks a pivotal moment in London's long history, illustrating the indomitable spirit of its people and the evolution of urban landscapes in response to disaster.