Bastille Day is the French National day of celebrations of French culture. Many large-scale public events are held, including a military parade in Paris, as well as communal meals, dances, parties and fireworks.
Get up early and walk through the city, there are all sorts of festivities going on, music, military parades. The roads are closed so perfect time to enjoy the city. The entry in to the Louvre is free on Bastille Day, line up may be long and might be busy, but make the most of the city it’s lovely, especially at night with fireworks.