The natural disaster that affected San Francisco in 1906 was a devastating earthquake, followed by a massive fire. Occurring on April 18, it registered a magnitude of approximately 7.9 and caused widespread destruction across the city. The quake itself led to the collapse of many buildings and infrastructure but was exacerbated by the fires ignited from ruptured gas lines, which blazed for several days. An estimated 3,000 people lost their lives, and over half of San Francisco’s population was left homeless. The disaster prompted significant changes in building regulations and emergency response strategies in the Bay Area.