The sacred valley of the Incas is behind the mountains which surrounds Cusco. The boundary is the sacred city, Machu Picchu. There is numerous cities in this very vast valley, where numerous Inca’s ruins still left. Pisac and Ollantaytambo are parallel to the Urubamba River, which was the Incas' sacred river. The valley was formerly estimated by the Incas for its geographical and climatic characteristics. It was one of the main points for the extraction of natural resources, and we use to found the biggest production of corn of Peru there. The region of Cusco has 13 provinces. The most known, in particular for their archeological sites, are Urubamba province and Calca province. The province of Cusco obviously is known for its history, location and because it was the Incas’ capital. You can find a lot of Incas’ ruins to visit in this region, as Sacashuaman, Qosqo, Puca Pucara and Tombomachay.
Situated over the Sacred Valley, the salt works of Maras are exploited by the families of the peasant community of Maras’s village. Hundred small terraces are staging in side, and the salt dries, while waiting for to be collected and iodized. These salt works have been used by Incas but we don’t know its origins are unknown.
There is also the Inca archeological site, Písac. It is one of the most important site of the Incas sacred Valley. Písac ruins are on a hill at the entrance of the valley. With its military, religious and agricultural constructions the site had a triple function. Pisac had certainly a function of defense, to protect the south entrance of the valley. The city includes a citadel and several thermal baths and temples, of which the Temple of the Sun. On the abrupt slopes of hills there is agricultural terraces