English: commemorative stone, placed by municipal authorities in downtown Warsaw in October 2017. It used to host a plaque, which displayed 1) 3-pointed red star, 2) small-font "¡no pasaran!", 3) borderline embroidments in republican colors; 4) large-font "Za wolność naszą i waszą. Dąbrowszczakom poległym w wojnie z faszyzmem w Hiszpanii w latach 1936-1939" (For your freedom and ours. To the Dombrovskites, fallen fighting Fascism in Spain in 1936-1939), compare here.

The plaque and the stone were repeatedly vandalised by unknown perpetrators, usually with red paint, compare here. In early 2018 the plaque was dismantled (unclear who did it, probably municipal authorities as well) and since then, there is just a stone with visible spot after the removed plaque.

Behind the stone there is a park, originally named "Joseph Stalin Park". After the fall of communism the park has been re-named to "Holy Cross Park" (from the adjacent Holy Cross Street, which retained its name also during the communist era, so Joseph Stalin Park was located by the Holy Cross Street).

In the background the "Joseph Stalin Palace of Culture and Science", as it was originally named when completed in 1955, now it goes by "Palace of Culture" or by one of its jargon names.

NOTE: I have added "Plaques to illegal activities" category since volunteering to foreign military units was illegal in Poland