H15 is situated in a XIX century building. It was built between 1892 – 97. Before World War I the patriotic youth organized secret meetings here and discussed the ways to lead Poland to regain independence. In 1924 the building was bought by The Soviet Union. It had become the official deputation of the Soviet Union which had been transferred to the Soviet Union Embassy. Some of the Art Nouveau decorations were replaced at that time by symbols of the ‚red star’ and the ‚hammer and sickle’. At that time Russians carved figures of peasants and workers at the tops of columns on the front of the building. Above the first floor balcony the ‚Soviet Union Globe’ was created. In this way the building has become one of the first examples of socialist realism in the world.
In 1941 the building was taken over by the Third Reich – it became one of Wehrmach quarters. Germans did not got rid of Soviet symbols, treating them like trophies. Paradoxically, the Wehrmacht saved it during bombing after the defeat of the Warsaw Uprising.
After The Second Word War, People’s Republic took care of the property. Later it belonged to the largest shipping company in Poland.