Ruins of Biržai Castle, 1797Biržai, Town views description Ruins of Biržai Castle Vilnius. Now in the National Museum, Warsaw. Biržai (Birsen (German), Birże (Polish), Birzhai (Биржай, Russian – pre-1917 Биржи), and בירז/Birz or Birzh (Yiddish). First mention in literature: 1455 Year 1797 Author Franciszek Smuglewicz (Pranciškus Smuglevičius) Sources www.wikiwand.com