Daugavpils fortress is stylistically monolithic Classicism style ensemble, reflecting the urban construction ideas of the time. Monumental fortification system consists of ramparts, bastions, ravelins, dungeons with massive brick arches and other elements. The construction of the fortress was started in 1810 (engineer J.F.Hekel). A detail plan for the fortress was drafted in 1816 after the design of architect I. Truzson. The plan determines functional zones, differentiate streets and other details. The main buildings of the fortress are the barracks, dwelling houses for officers, hospital, staff and commandant buildings, engineers' and artillery arsenal as well as fortress gates and other edifices built in 1816 - 1830 after the design of architect A.E.Shtaubert. Daugavpils fortress is a significant fortification building, the only one of this kind and scale in the Baltic states.