Battle of Ostrołęka Mausoleum in Ostrołęka, Poland. Construction started in 1930 and wasn't finished when WW2 broke out. Partially damaged and demolished during the war, finally completed in 2012 according to the original project created by Romuald Zerych and Borys von Zinserling.
Garrison Orthodox Church of 12th Mariupol Dragoon Regiment in Białystok, Poland (c. 1897-c. 1920). Demolished. Originally a gazebo from which emperor Nicholas II observed the 1897 military maneuvers.
Dolomite Piast eagle bas-relief on the wall of the government building in Katowice, Poland. Created in 1938 by Stanisław Szukalski, destroyed by Germans in 1939.
Marszałkowska Street in Warsaw, Poland near the intersection with Aleje Jerozolimskie in the direction of Świętokrzyska Street 1936/2025. (Credit: Adam Majka Krogulscy)