Geographical crossword

1. The biggest citi in the USA. 2. The capital of France. 3. A legend says that this city disappeared under the sea thousands of years ago. 4. Three American men started their journey to the Moon at this place. It's ... Space Center. 5. The Pyramids are near this city. 6. You can see famous bridge, Clock Tower and red double-decker buses in this city. 7. A long time ago this city was the capital of an empire. 8. This place is in the same country as (7). A volcano destroyed it nearly 2000 years ago.