The city of Porto (Harbour, in Portuguese) became in 868 the center of the re-conquest of Portugal's land. Today it is the second most important in the country. In the 18th century the city became extraordinarily rich because of the commerce with South America and the business of the fine wines of Porto.
Today Porto features a historic downtown and many important and unique monuments such as the steel bridge over Douro River, office buildings and railway station by Praça Liberdade and unique churches.
In 2004 Portugal hosted the Eurocup of soccer, this bringing a new stadium and development with many high-rise buildings. The city also opened in 2004 a brand new and modern light metro system.