 The replication throughout Andean South America of Inca architectural techniques such as those employed at Coricancha further illustrates the Inca's control over a vast geographic region.Pachakutiq Inca Yupanqui rebuilt Cusco and the House of the Sun, enriching it with more oracles and edifices, and adding plates of fine gold.He provided vases of gold and silver for the Mama-cunas, nuns, to use in the veneration services.