Found in the western part of Daugavpils and on the banks of the Daugava River, this is almost the only fortress in Northern Europe that has been preserved since the first half of the 19th century.  Work on the fortress began in 1810, though it suffered much damage during the war of 1812 and because of flooding in 1829.  The fortress was of strategic importance in terms of its location, not least in terms of the battle against Napoleon’s forces.  It was consecrated in 1833, though construction work ended nearly half a century later, in 1878.  The fort is divided up into squares, with the Parade Field in the centre of the whole fortress.  After it lost its strategic importance in 1897, a warehouse was installed there.  Prior to World War I, General Jānis Balodis, Colonel Frīdrihs Briedis and others served at the local garrison.  In 1912, in honour of the centenary of the aforementioned war, a monument was unveiled in the park of the fortress.  During the Soviet occupation, Red Army units took over the fortress, and a technical aviation school was established there.  Even today, the fortress is a “city in a city.”  It has a residential area, though the buildings are quite shabby.  Both inside and outside the fortress are many elements that relate to military issues.  Right now fundamental work is being done to reconstruct the buildings, water pipelines and streets of the fortress.  The fortifications of the fortress are home to one of the largest colonies of bats in all of Latvia, and it is strictly forbidden to disturb them when they are asleep.  Major restoration of the fortress has included the establishment of the Mark Rothko Art Centre.  The distinguished artist was born in Daugavpils in 1903, when Latvia was still part of the Russian Empire.

An impressive set of military structures between the Baltic Sea and Lake Liepāja and Lake Tosmare.  Construction of the fortress began in the late 19th century on the basis of a decree by Russian Tsar Alexander III, and it cost 45 million gold roubles.  The fortress includes accommodations and elements of fortifications – sites for cannons, trenches, gunpowder cellars, systems of canals, a narrow-gauge rail line, etc.  In 1908, the fortress was shut down because of a change in Russia’s defence concept, and the construction of it was declared to have been a strategic mistake.  There were attempts to blow up the underground structures and cellars during World War I, but that did not really succeed.  Some elements of the fortress were of great importance in Latvia’s liberation battles.  Surviving today are the Northern forts, the Central fort, the Eastern fort, the Southern fort, the shoreline defensive batteries (No. 23, 3), Redāns, Lunete, and others.  Most are not improved, so visits may be dangerous.  The northern part of the fortress includes the Military Port, which has experienced seven different armies and regimes. During the Soviet years, it was closed to civilians.  There are many outstanding monuments to military history.  Tourists love the Karosta prison, which offers educational programmes.