Answer:Rectangular buildings could be grouped in threes (or more) and arranged around an open but walled courtyard or patio, perhaps the most common Inca arrangement of buildings. This mini-complex is known as a kancha and functioned as administrative buildings, workshops, temples, accommodation or a mix of these. Very large buildings are known as a kallanka and these typically have several doors and face a large open space, often (once again) trapezoid in layout. They were probably used for public gatherings and as accommodation for representatives of the Inca administration and were clear public symbols of imperial control. Palaces were similar in design to smaller buildings just on a larger scale, with finer stonework and very often walled to restrict access and the viewing of royal personages.
The vast majority of Inca buildings were rectangular and most of these had a single entrance and were composed of only one room as dividing walls are not common in Inca design. There are some rare examples of multiple-doored long rectangular structures and even buildings which were circular or U-shaped but the norm was for straight-walled structures. Most buildings had only a single storey but there are some structures with two, especially those built into hillsides and the more impressive imperial structures at the capital Cuzco where sometimes there are examples of three-storey buildings.
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