A devastating earthquake struck San Francisco on April 18, 1906. The powerful quake was felt from Oregon to Southern California. No measuring tools existed at that time, but experts say the quake most likely would have registered 7.8 to 8.3 on the Richter scale.
The quake shook San Francisco for a full minute, leaving many of the city’s buildings in ruin. An estimated 3,000 to 5,000 people died.
Click the video player below to see before and after footage of San Francisco from 1906.