La villette: Cité des Sciences et de l'industrie
On the 19th arrondissement, the Parc de la Villette is - with its 25 hectares - the second largest green space in Paris (the first one being the Père Lachaise cemetery). It host follies, public facilities and playgrounds. Designed by Bernard Tschumi, il was built on the site of what had been the national meat market.