Great job! Here are the correct responses:
1. The Seine River which runs slightly to the south of the center of Paris. If you want to see all the major sites of the city in one fell swoop, a cruise on the Seine is definitely the way to go.
2. The Man in the Iron Mask. There was actually a prisoner who was kept in an iron mask in the prison at Pignerol because he was an embarassement to his family.
3. False. Although Lance Armstrong has won in recent years, an American athlete has only won the hundred year old race a total of 10 times.
4. July 14th, commonly known as Bastille Day and French Independence Day.
5. Van Gogh. Although Van Gogh spent so much of his time in Paris during his adult years that he is generally considered a "French artist" by default.
6. False. Victor Lustig is credited for originally selling the Eiffel Tower after the World's Fair of 1889. It was Alexandre Gustave Eiffel (engineer and architect) who designed the Eiffel Tower.
7. Impressionism. Artists like Renoir and Manet, based in Paris, made the impressionistic movement famous.
8. The number six refers to the arrondissement in which the building is located. It is quite common to give someone your address in this way, describing the general vicinity of where something is.