1. Go to the Montplier area where the Moulin Rouge is and hang there for about one evening and eat at the restaurant next to the Hotel Montplier. Spend good money on the 3-tiered seafood feast they have. 2. Take a cab and run up to Montmartre on the hill above there where Renoir painted his famous paintings of couples dancing and Van Gogh lived. Spend all day there on the steps of the Sacre Coeur, get your portrait drawn, and walk down the alleys to the base and see all the shops and stop several times at different cafes and shops. Eat as much delicious pastry as you can because you'll never taste anything like it again. 3. When you go to Notre Dam, plan to spend all day. Inside the carvings are insane and in the basement are buried some really old caskets. But also plan to sit outside as much as you can there and have some bread for the hundreds of birds that will land on your hands if you want them to. Smell the air. Yum. 4. The catacombs are great if you like seeing all the bones and skulls from workers and from the black plague that were used . Mote in comments
The Cathedral of Notre Dame - on the Ile de la Cite. The Luxembourg Gardens and Montparnasse Cemetery on the left bank, just south of N.D. The Museum D'Orsay on the left bank, then cross the river to the LOUVRE! After a few hours (or weeks) at the Louvre, head west through the Tuileries Gardens to the Grand Palace (the big glass building). BUT! Most Importanty! You have to take a tour of the Paris CATACOMBS! Sure, the Eiffel Tower is nice, and the Louvre is nice, and the Latin Quarter is nice, and Montmartre is nice, but the Catacombs will just blow your dang mind!!