The permanent exhibition of Museu da Inconfidência, assembled for the inauguration of the institution in 1944, remained untouched until mid-2005, when the modernization project was started. The goal was to maintain the institution faithful to the theme set by the decree of its creation.
Because of the lack of material related to the movement of Conjuração Mineira(Inconfidência Mineira) or the political orientation of the time, it is certain that there was no satisfactory historical research that would enable a thorough understanding of the origins of the political movement of 1789. There was no understanding that the evocation of Vila Rica was essential to the approach of the conspiracy. What was presented was a superficial exhibit on the evolution of the State of Minas Gerais.
The current structure of the exhibition presents the Inconfidência related to Ouro Preto, also allowing a new reading of the social, political and artistic life of the State of Minas Gerais of the 18th and 19th centuries. The museography, responsibility of the French expert Pierre Catel, assumed international proportions.
The first floor features the city's infrastructure, from the origins to the imperial period. Object of construction, transportation, mining, aspects of social and political life regarding the movement of the Inconfidência document the evolution of a human grouping that would think in Brazilian independence. The second floor reveals the superstructure of artistic creation, highlighting the importance of the Church.
The first phase of the modernization project of Inconfidência was completed in August 2006, when the Museum reopened its doors. Three years later, the institution finished the entire process, with the opening of the external lighting of the old Casa de Câmara e Cadeia, Store and Café and a Film Club. The reconfiguration received the incentive from the Brazilian Ministry of Culture, sponsorship of Caixa Econômica Federal, Petrobras, Acesita Companhia Brasileira de Metalurgia e Mineração, Vitae Apoio à Cultura, Educação e Promoção Social and had financial aid from private banker Aloysio Faria.