Trás-os-Montes e Alto Douro Province
Trás-os-Montes e Alto Douro (Portuguese pronunciation: [ˌtɾazuʒˈmõtɨz i ˈaɫtu ˈðowɾu]) is a historical province of Portugal located in the northeastern corner of the country. Vast plateaus, river valleys, mountains, and castles abound in Trás os Montes e Alto Douro.
A first attempt to register its constitution was made under the reign of King Sancho II (1223–1248). A second was made in the reign of his son and successor, Afonso III (1248–1279), under the Inquirições or royal commissions in 1258, intending to base the territory of Trás-os-Montes on so-called "new towns" under direct control of the Crown. Afonso III (1248–1279) gave it its charter in 1253, referring to the town, "a hill opposite the Crespos", which already had a core of settlements organized around the Church of St. Facundo.
Currently the region is divided into two districts on the right (northern) bank of the Douro river — Vila Real and Bragança, with 5 other municipalities on the south bank of the Douro river included in the districts of Viseu and Guarda. The name — Beyond-the-Mountains and Upper Douro — refers to the location on the "other" (eastern) side of such mountains as Marão, Alvão and Gerês, which separate the coast from the interior, and along the upper valley of the Douro River. This isolation kept the province poor and underpopulated for centuries, causing many people to move to the coast or emigrate to other European countries such as France, Luxembourg and Switzerland, and to Brazil.