Housed in the former Palace of Governors, on Tiradentes Square in Ouro Preto, the Museu de Ciência e Técnica da Escola de Minas (often called the Mineralogy Museum) holds one of Brazil's most comprehensive scientific collections. Exceptional minerals, 19th-century mining machinery, period library and a reconstructed gold mine comprise a journey that illuminates Minas Gerais State's central role in the country's geological and economic history.

Why visit this museum

The museum combines two dimensions rarely brought together in a single place. On one hand, major architectural heritage: an 18th-century colonial palace listed by IPHAN. On the other, scientific collections assembled over nearly 150 years, including a set of minerals and meteorites among Brazil's most significant.

The visit will appeal equally to geology and science history enthusiasts and to curious travelers seeking to understand how Minas Gerais gold shaped Ouro Preto and Brazil's economy. The diversity of disciplines covered (metallurgy, astronomy, chemistry, topography) also makes it an educational museum that extends well beyond the mineralogical scope.

History of the building and museum

The building is the former Palace of Governors, erected in 1741 by Manuel Francisco Lisboa, father of sculptor Aleijadinho. Over the decades, it successively served as the House of the Mint, then as official Printing House, and housed the residence of over a hundred governors of the captaincy and then Minas Gerais State. Listed as a historic monument by IPHAN in 1950, it bears witness to the civil architecture of the gold cycle.

The museum itself was founded and inaugurated in 1876 by French geologist Claude-Henri Gorceix, creator of Ouro Preto's School of Mines. Mandated by Emperor Dom Pedro II, Gorceix established modern scientific education here, of which the current collections are the direct legacy.

What you'll discover in the galleries

Mineralogical collections

The collection comprises between 20,000 and 30,000 specimens distributed across roughly a dozen thematic sections. Among the most remarkable pieces are quartzes, imperial topazes (a specialty of Minas Gerais), diamonds, agates, opals and uranium samples. A significant collection of meteorites, among the country's most important, rounds out the geological journey.

A reconstructed 19th-century gold mine

A dedicated room reproduces the interior of a gold mine as it was worked in the 19th century. Galleries, tools and extraction devices allow you to grasp concretely the working conditions that brought both wealth and hardship to the region.

Other disciplines represented

Beyond mineralogy, the museum presents collections spanning several scientific fields:

• Natural history
• Metallurgy
• Physics
• Astronomy
• Topography
• Technical drawing
• Chemistry

The ground floor is devoted to taxidermied fauna and geology, while the upper floor displays raw and polished stones in period-display cases that are themselves integral to the museum's presentation.

The historic library

Created in 1876 by Henri Gorceix, the library retains its original furnishings and houses over 23,000 volumes, including rare 19th-century scientific editions. It is one of the museum's most striking spaces, both for its atmosphere and for the heritage value of its collection.

Practical information

The museum is open Tuesday through Sunday, early afternoon hours. Hours may vary by section, as each area sometimes has specific opening days: it is recommended to check the official website before visiting, especially if you wish to see a particular collection.

Entry fees remain moderate. Plan for 1.5 to 2.5 hours to tour the entire museum without rushing. An important point to know before arrival: photography is prohibited inside the museum.

How to get there

The museum is located on Tiradentes Square, in the heart of Ouro Preto's historic center. From Belo Horizonte, the capital of Minas Gerais, the city is accessible in approximately 1.5 to 2 hours by road, either by regular bus from Belo Horizonte's bus station or by car via BR-356. Once there, the entire center can be explored on foot, keeping in mind that the cobbled streets are steep: wear sturdy shoes.

Combine with other sites

Ouro Preto lends itself to several days of exploration and the museum fits easily into a broader circuit through Brazil's natural and cultural spaces. To extend your country exploration, you may consider:

• The Chapada dos Veadeiros National Park, for its cerrado landscapes and waterfalls.
• The Gruta do Lago Azul, an emblematic cave in Mato Grosso do Sul.
• The Estância Mimosa, in the Pantanal, for its trails and waterfalls.
• The Anavilhanas National Park, a river archipelago on the Rio Negro.

Frequently asked questions

Incorporate Ouro Preto into your journey

Ouro Preto and its scientific museum constitute a strong stop on a cultural itinerary through Brazil, to be paired with Minas Gerais colonial towns and the country's vast natural spaces. To plan your stay, consult our Brazil travel itineraries and build a custom circuit with our local advisors.