The main cities in this country are Paris, Lyon, Marseille, Nice and Nantes.

1. Paris: the capital and largest city of France, and also a world-famous center of fashion, culture and art.

2. Lyon: Located in the southeast of France, it is an important industrial and commercial city in France and is famous for its history, culture and cuisine.

3. Marseille: Located in the south of France, it is one of the largest port cities in France and an important economic center in the Mediterranean region.

4. Nice: a coastal city in southern France, which is popular for its beautiful beaches, pleasant climate and rich cultural activities.

5. Nantes: Located in the west of France, it is an important city in the Loire River area with a long history and cultural heritage.