Inca Ruins of Saqsaywaman and Qenqo (with Narration/Music)

The ruins of Saqsaywaman and Qenqo in Peru showcase the great resourcefulness and skills of the Incas. Saqsaywaman, at over 12,000 feet above sea level, is a walled fortress overlooking the city of Cusco, the ancient Inca capital. It took 20,000-30,000 men 60 years to move and put the massive stones in place for military and religious purposes. The stones were place on top of each other without mortar and even a credit card can't fit between them. Qenqo is a religious site located near Cusco which was carved out of a giant stone monolith. Underneath the rock is an underground burial chamber where mummies used to be stored.

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[Azeraph]

I often wondered how they shaped them without constantly swapping them in and out. They either had them flat on the ground and worked them by flipping or they had a mud template. The shaping on the flat would be a pain. So i'm going for templates that can be used to line up and save the final placement as one movement. That's on the big ones.

[gabejkish]

Nice video with pretty music but there are problems with the comments. Quite a few archaeologists and historians date the foundations of Saqsaywaman to a much earlier pre-Inca time. We even have a testimony from the year 1572 by an Inca prince to the Spanish viceroy Francisco de Toledo saying that "that the Cyclopean walls had ‘always’ been there; that his people did not even have a tradition as to who built them, and that they had always believed them to be the work of gods or made by magic." As to the construction, a Russian-Peruvian team of geophysicists from 2012 analyzed the siliceous limestone walls of Saqsaywaman, compared rock samples from the fortress and also from the quarry and stated clearly in their report that the rock material was obviously ground up, then chemically processed and molded(!) into blocks. By a technology the Incas simply did not have. Yours truly has actual micrographs of these samples, including the likely chemical formulas for the process and a lot more details of this whole issue in a book called The Saqsaywaman Mystery on amazon.com.
Yes, the Incas did add to the old walls and built a palace on top of the hill which was later demolished by the Spanish and the stones reused for their own houses in the city. 
This is a wonderful subject and there is a great chance that Saqsaywaman may represent some of the oldest architectural structures of humanity, predating even Gobekli Tepe...