Plan your trip by reading some good guides for Paris, France, Europe, etc. Here are a few suggestions (check to see if your local public library has a copy-- many have e-books available!):
First rate British guides: Rough Guide Paris and Rough Guide France
DK Eyewitness Guides to Paris and France, have a visual layout which is very appealing.
Michelin Guides come in two colors and contents: Green for cultural content by region and the annual Red guide of hotels and restaurants
Rick Steves’ well-known guide for France
Here are some links to give you more information about places we'll be visiting this year!
Musée de Cluny (Medieval France)
Centre Pompidou (20-21st Century Art)
Musée de l'Orangerie (Impressionist Art)
Musée Rodin (sculpture)
Palais de la Découverte (Science)
Musée des Arts et Métiers (technology)
Grande Galerie de l'Évolution (natural history)
Catacombs (artistic display of human remains)
Basilique Cathédrale de Saint-Denis (tombs of French Kings)