In 1906, a major earthquake struck San Francisco, California. The initial shock damaged buildings throughout the region. Yet the worst was still to come, as fires broke out in collapsed buildings, in some cases sparked by ruptured gas lines.
Over the next four days, a conflagration swept through more than half of the city, consuming over 4.7 square miles of the downtown area, destroying 28,188 buildings, killing more than 3,000 people according to the official count, and leaving between 227,000 and 300,000 people homeless (out of a total population of 410,000).
