Hochstrahlbrunnen und Heldendenkmal

High jet fountain 1873, Vienna
The Hochstrahlbrunnen is a fountain in Vienna. It is located on Schwarzenbergplatz and was put into operation on October 24, 1873 in the presence of Emperor Franz Joseph I on the occasion of the completion of the first Vienna high spring water pipeline after a construction period of four months.
Anton Gabrielli, contractor of the water pipeline, donated 200,000 crowns to build the fountain, which was carried out by contractor Gustav Bruck on behalf of the City of Vienna.
In 1886/87, extensive considerations were made about the regulation of Schwarzenbergplatz and, associated with this, the redesign of the Hochstrahlbrunnen. The designs by the important sculptors Viktor Tilgner (1844–1896)[4] and Rudolf Weyr (1847–1914) were presented to the public in the Vienna Künstlerhaus from the end of January 1887, but a decision in their favor was not made.
The fountain was later converted into a light fountain in the style of a Fontaine lumineuse by the architect Oskar Marmorek (1863–1909), at a cost of 285,000 crowns, which was opened on June 23, 1906. At night it glows in the colors red, pink, yellow, violet, blue and green.
Text / source Wikipedia
de.wikipedia.org/wiki/Hochstrahlbrunnen

Liberation Monument (Red Army soldiers)
Monument in memory of the approximately 18,000 soldiers of the Red Army who died in battle during the liberation of Vienna.
The Liberation Monument (also a monument in honor of the soldiers of the Soviet Army), popularly known as the Russian Monument on 3rd Schwarzenbergplatz, stands on that part of the square that was called Stalinplatz from April 1946 to July 1956. The hero's monument to the unknown Russian soldier, erected on behalf of the Red Army to commemorate the liberation of Vienna by the Red Army, on whose 20 meter high base rises the twelve meter high statue of a Red Guard soldier with a flag in his hand, stands against the background of an eight meter high balustrade, at each end of which a group of two fighters was attached. The monument was built exactly in the main axis of the square so that it can be clearly seen from the Ringstrasse.
The design came from Major C. G. Yakovlev, the sculptures were created by Lieutenant M. A. Intisaryan, and the overall management was by Major Engineer M. S. Schönfeld; Montage Ernst Hawlik (Vienna 3). The monument bears the inscription (in Russian): Eternal glory to the heroes of the Red Army, who fell in the fight against the German-fascist robbers of the freedom and independence of the peoples of Europe. In front of the central column with the statue, a tilted metal cube was erected at the end of the 1970s (according to POREM 1986), which reads in German and Russian: Monument in honor of the soldiers of the Soviet Army who fell for the liberation of Austria from fascism . April 1945. Creator of the monument: sculptor M. A. Intesaryan architect S. G. Yakovlev. The monument was inaugurated on August 19, 1945."
The monument was prepared by the Red Army before the capture of Vienna and was ceremoniously unveiled on August 19, 1945, when the Soviet armed forces were still solely occupying Vienna (see also Allied Occupation). The 3rd District passed into the administration of the British Army on September 1, 1945. The monument was therefore not in the Soviet sector; The 4th district, which was occupied by the Soviets until 1955, is directly adjacent to the monument.
The social democratic "Arbeiter-Zeitung" wrote about the unveiling of the monument in its lead story of August 21, 1945, saying that it was a symbol of faith and gratitude.[1] After the top Soviet officers Gusev and Krainyukov, State Chancellor Karl Renner, who appeared at the head of the provisional state government, spoke at the unveiling. He thanked the holy Russian people and Generalissimo Stalin for the liberation of the country. After Renner, top ÖVP politician Leopold Figl and KPÖ representative Ernst Fischer spoke, followed by retired mayor General Theodor Körner, who, as agreed, took the monument into the care of the city administration. Generals and soldiers from all four Allied armies took part in the opening of the monument; a parade of American, English, French and Soviet soldiers concluded the opening.
The monument is repeatedly the target of attacks: on August 18, 1962, an explosive attack was carried out on the liberation monument, and in the 2000s it was repeatedly defaced with paint.
Text / Source: City of Vienna
geschichtewiki.wien.gv.at/Befreiungsdenkmal

The "Heroes' Monument of the Red Army" was erected by the Soviet Army (Red Army) right after the Second World War, back in 1945.