1. The city was built upon old Gold Rush ships.
During the Gold Rush of 1849, more than 500 ships were recorded to be in the city’s harbor as news of gold spread around the world. Many of the ships were immediately abandoned upon arrival and were left to rot. Others were transformed into saloons, hotels and jails, but eventually built over by the city. One of the most recent discoveries was in 1994 when a 200-foot long ship was found 35-feet underground during an excavation for a tunnel near the Ferry Building.