The Aiviekste is a river in Latvia. It begins at Lake Lubāns (the largest lake in Latvia) and drains into the Daugava (the largest river in Latvia). The Aiviekste is the largest tributary of the Daugava, in Latvia. The Aiviekste, along with the Pededze River, forms the border between Vidzeme and Latgale. Daugava sunset in Riga. ... Livonia (Latvian: Livonija; Estonian: Liivimaa; German: Livland; Polish: Inflanty; Russian: ÐиÑлÑÐ½Ð´Ð¸Ñ or Liflandiya) once was the land of the Finnic Livonians, but came in the Middle Ages to designate a much broader territory controlled by the Livonian Order on the eastern coasts of the Baltic Sea in present-day Latvia and... Latgale or Latgalia (Latvian: , Latgalian: Latgola; Polish: Åatgalia; German: Lettgallen; Russian: ÐаÑгалиÑ) is one of the four cultural regions of Latvia recognised in the Constitution of the Latvian Republic. ...