Built by the pre-industrial Incans, the three-tiered walls of the Sacsayhuamán complex are a marvel of engineering with some of the biggest blocks ever found in Incan construction fitted together so tightly, mortar was not even necessary.While the site is thought to be the remains of a much larger fortress complex that once stood atop it, the remaining walls ... read more (+)
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28 August 2014
15 April 2016
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