Steep cobblestone streets, colonial façades, and gilded baroque churches climbing the hills of Minas: Ouro Preto is a time capsule of 18th-century gold-rush Brazil. It guards more than 20 temples and the masterpieces of Aleijadinho, the genius who sculpted without hands. Its Holy Week, with flower carpets in the streets, is the most famous in the country. A World Heritage Site, top to bottom.