Provinces of Portugal – Wikipedia

Beira Alta – the “natural regions” of Beira Alta and Beira Transmontana, that included Guarda District (except for the municipality of Vila Nova de Foz Côa), Viseu District (except for the municipalities of Cinfães, Resende, Armamar, Lamego, São João da Pesqueira and Tabuaço), and the municipalities of Oliveira do Hospital and Tábua (in …

https://en.wikipedia.org/wiki/Provinces_of_Portugal