In December 2000, UNESCO declared the historical center of Arequipa a World Heritage Site, stating the following:
"The historical center of Arequipa is an example of ornamented architecture, represents a masterpiece of the creative coalition of European and native characteristics. A colonial town challenged by the conditions of nature, the indigenous influences, the conquest process and evangelism as well as for a spectacular natural scenario."
Wikipedia https://en.wikipedia.org/wiki/Historic_Centre_of_Arequipa
Official Website http://whc.unesco.org/en/list/1016/
Coordinates -16°23'53.467" N -71°32'10.635" E