19èME ARRONDISSEMENT. Occupying the site of a former slaughterhouse, this museum of science and technology acts with a more benign hand these days. The incredible site includes a metallic sphere, an artificial river, and light-filled greenhouses. Exhibits run the gamut of scientific exploration, touching on medicine, technology, industry, space, botany and more. An interactive children's area even lets young folks make their own discoveries about the physical world through play and experimentation. Great for the entire family. METRO: Porte de la Villette (line 7)

The Space and Air Museum rests on the site where Charles Lindbergh's plane landed after the first transatlantic flight. The facility now houses more than 175 historic planes, including the oldest Massia-Biot glider from 1879, the 1908 Wright airplane, and the Concorde. METRO: La Courneuve (line 7) then bus 152

5èME ARRONDISSEMENT. Plan on spending some time at this educational complex, which highlights nature and science. The museum includes the Royal Botanical Gardens, a menagerie including reptiles and birds, a micro exhibit (viewable with the aid of special headgear), and exhibits of minerals and fossils. Hours and admission vary with the specific destination.

8èME ARRONDISSEMENT. Located behind the Grand Palais, this science and technology museum is smaller and older than the Cité des Sciences, but it has a charm all its own. Created in 1937 to help people understand the scientific method, the museum brings in excellent temporary exhibits to augment its permanent displays on physics, biology, electricity and the like. It also has a wonderful collection of original Da Vinci designs. METRO: Champs Elysées-Clemenceau (line 1 or 3)