The San Francisco earthquake occurred on April 18, 1906, and is one of the most significant earthquakes in U.S. history. It registered a magnitude of approximately 7.9 and caused widespread destruction across the city. The quake was followed by devastating fires that lasted for several days, leading to extensive damage to buildings and infrastructure. The disaster resulted in the deaths of an estimated 3,000 people and left over 200,000 residents homeless. In the aftermath, the city underwent a major rebuilding effort, which included improvements in building codes and emergency response systems to better prepare for future earthquakes.