sentences:  The site was most likely built at the end of the 15th century during the reign of the Inca king Pachacuti Inca Yupanqui also known as Pachacutec, after the annexation of the merchant kingdom of Chincha.The site owes its name to the abundant use of colors on the walls.Thanks to favorable (very dry) environmental conditions, many walls at Tambo, both internal and external, retain enough residual colored paint to accurately reconstruct what the original wall painting would have been like.