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inca 1300-1450     The Inca architecture can be found in modern day Peru and Chile.       Inca cities were oftentimes designed in the form of sacred animals, such as the puma and cougar.       Materials used for architecture were adobe, fieldstone, pirca, clay mortar, and plaster.  Pirca is formed by fieldstone set in clay mortar.   Homes were small huts made of pirca.  The roof was composed of thatch tied to wooden frames.  Roof design was a way to show the wealth of the structure.   Stones were used to line intricate roads and paths, sometimes containing running water in the middle.   Incas were well known for their use of masonry.  Blocks of stone that were cut, ground, and polished until the surface was smooth and shaped to perfection.