Potosí is a city in southern Bolivia, located at an altitude of about 4,090 meters (13,420 feet) above sea level. It was founded in 1545 and became famous for its rich silver mines, particularly the Cerro Rico mountain, which was a major source of wealth for the Spanish Empire during colonial times. Today, Potosí is recognized as a UNESCO World Heritage Site due to its historical significance and well-preserved colonial architecture. The city has a population of around 150,000 people and serves as a cultural and economic center in the region, attracting visitors interested in its history and mining heritage.