The colonial mining city of Zacatecas was declared a UNESCO World Cultural Heritage Site in 1993, primarily because of its attractive historic center. The mine named after the Garden of Eden opened in 1975 as a tourist attraction, like so many places where Adam and Steve lost their health digging for silver, lead, gold, copper, zinc and cadmium as to create wealth for their masters. The local guides will tell you their favorite pulmonary disease jokes like this one: "A miner goes to the doctor who tells him "I'm sorry, hijo, but you have silicosis. You'll be dead in a year." On his way home, the grief-stricken miner stops in his favorite cantina and has a couple chelas with his friends, telling them the bad news: "Compadres," he says, "I'll be dead in a year' coz I got AIDS." Our guide stopped and giggled until someone asked the obvious questions? "Why would the miner say that?" Our guide: "'Cause when he dies, he does not want his friends trying to make out with his wife!" Enjoy your tour.