VIZEU, or VISEU  , an episcopal city and the capital of the district of Vizeu, Portugal, at the terminus of a branch of the Figueira da Foz-Guarda railway, and on the Ribeira d'Asnos, a sub-tributary of the Mondego . Pop . (1900) 8057 . The cathedral, which was founded in the 12th century, contains pictures by the native artist Graft) Vasco (16th century) . The city stands near the ruins of the ancient Vacca, or Cava de Viriato, a Roman military colony founded by Decius Brutus and captured by Viriathus (2nd century B.c.) . The administrative district of Vizeu coincides with the central and northern parts of the ancient province of Beira (q.v.) . Pop . (1900) 402,259; area, 1937 sq. m .