All the Inca cities had large open spaces or squares. These divide the sector of Machu Picchu into 02 areas.
Bingham called it Main Square because it was the courtyard of the main temple, the temple of the three windows and the house of the priest.
It was the scene of transcendental ceremonies in honor of the deities.
Its architecture is of great finesse for the topography of its architectural units and association with funerary contexts that induce to think of a ceremonial function.