The Great Fire of London in 1666 was primarily caused by a bakery fire that ignited in Pudding Lane, rapidly spreading due to wooden structures and a strong wind. The conflagration lasted for four days, consuming a significant portion of the city, including many homes, businesses, and landmarks. The consequences were monumental; thousands were left homeless, and the infrastructure was devastated, prompting a sweeping redesign of London. The fire also led to new building regulations and fire safety measures, transforming urban architecture. Additionally, it had social repercussions, including shifts in the economy, as rebuilding efforts provided jobs and opportunities while changing London's demographic landscape.