Ouro Preto is a city in the state of Minas Gerais, Brazil. The city was founded at the end of the 17th century and became a prominent center for gold mining in the region. Ouro Preto was also the capital of the state of Minas Gerais until it was moved to Belo Horizonte in the early 20th century.

The city is known for its well-preserved colonial architecture and baroque churches, including the Church of Saint Francis of Assisi, the Nossa Senhora do Carmo Church, and the Church of Our Lady of the Rosary. The city has been declared a UNESCO World Heritage Site in recognition of its historical and cultural significance.