Criterion (i): Set in a remote and rugged landscape, the aesthetic quality of the vernacular and erudite architecture and irregular urban pattern of Ouro Preto makes the town a treasure of human genius. Criterion (iii): The built heritage of the Historic City of Ouro Preto bears exceptional testimony to the creative talents of a society built on pioneering mining wealth under Portuguese colonial rule. IntegrityThe Historic Town of Ouro Preto retains its urban nucleus built in the colonial period, including the diversity of civic and religious buildings marked by refined aesthetic and architectural qualities that express Outstanding Universal Value. Protection and management requirementsSince the 1930s, the Historic City of Ouro Preto has been targeted for protection through a series of government initiatives. In the light of these measures, the Brazilian Government submitted an application to UNESCO requesting designation of Historic Town of Ouro Preto as a World Heritage Site.