Side view of the Palace of the Unions
Palace of the Trade Unions in Vilnius New Town. Trade unions in the Soviet Union were controlled by the government (this being even more ridiculous since the government was also effectively the sole employer). However, being "workers institutions" in a (supposedly) workers society they were important for propaganda, so their lack of power has been compensated by pompousness of their edifices. That's how Lithuanian trade unions received this massive Stalinist palace on one of Vilnius tallest hills.
In 2014, a Polish graphic designer, street art artist and designer Mariusz Waras decorated this building as of the international street art festival “Vilnius Street Art."