Until September 22, 2014, at the Reinha Sofia Museum in Madrid is open the exposition "Playgrounds. Reiventar la plaza" (Playgrounds. Reinventing the Square). From the site: "With some 300 works, the exhibition recounts a different history of art, from the end of the 19th century to the present day, in which artists and activists play a part in redefining public space by exploring the city as a game board, questioning modern-day carnival and holidays, vindicating the right to laziness, reinventing the square as a place of revolt and discovering the possibilities of a new world through its waste. The exhibit takes the playground model as an ideological interrogation of an alienated and consumerist present."
Here the exposition's site: http://www.museoreinasofia.es/en/exhibitions/playgrounds
Here a short video: