an Entity references as follows:
Trás-os-Montes e Alto Douro (Portuguese pronunciation: [ˌtɾaz‿uʒ‿ˈmõtɨz‿i ˈaltu 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.