Located about 50km form Mexico City, Teotihuacan is one of the greatest mysteries in  the history of humanity. Mysterious circumstances and time of its establishment are not known till now. We have only a legend, according to this city was built by giants called quinametin. Their civilization had been destroyed by a great catastrophe, before first man showed on Earth. The most fascinating thing in Teotihuacan is that this all impressive compound was built without usage of metal tools according to strict layout resembling solar system. It’s estimated that first buildings were built in 2nd century BC and the peak of this empire could have taken place between 4th and…