You’ll spend the fourth day of this Brazil colonial cities tour exploring the narrow winding streets of Ouro Preto. This town became very wealthy during the gold rush and is now an open air museum of richly decorated baroque churches, there are more than 20 of them. Ouro Preto, which means ‘black gold’, has been a UNESCO protected site since 1980. This has helped the town to retain its historic 17th century atmosphere. The cobbled streets are uneven, so pack sturdy walking shoes. In the afternoon you can stop off for a tour of the Minas de Passagem gold mine on the way. During the tour you’ll descend into the mine by cart. Once you reach the bottom, 135m down, a guide will show you how gold was extracted from the mine. At the end of the afternoon you’ll return to Ouro Preto to spend the night there.