Located in the country's south-central highlands, this city of 264,000, and 13,420 feet over sea level, is a UNESCO World Heritage Site because in the 16th century it was the world's largest industrial town, devoted to the mining of silver. A couple of months ago, MSN ran a piece showcasing dozens of the world's landmark places currently most at risk, and this is one of them; find out why here.

(EEJCC)