Parade Square (Polish: Plac Defilad w Warszawie) is a big city square in central Warsaw, Poland. It was established in 1955 by the Soviet Union together with the building of the Palace of Culture and Science. The square is one of the biggest in Europe and the world. It was used in the Communist period by the government of People's Republic of Poland for military parades. After the fall of the communism in Poland in 1989 the square was abandoned and made into a marketplace. The Warsaw municipality is planned to destroy the square for a Museum of Modern Art that will open in 2015.