La Villette

"It’s hard to decide if the Parc de la Villette, up in the 19th Arrondissement (and so pleasantly lacking in tourists) is an urban, modern park or a collection of cultural centers with some wonderfully creative patches of green between. The Canal de l’Ourcq runs through the center of the complex, which offers plenty for kids, including the Cité des Sciences et de l’Industrie, the largest science museum in Europe, and a playground where a dragon tongue doubles as a slide." - Daisy de Plume