Celebrations start on the evening of July 13th, and carry on through the whole of Bastille Day - July 14th. With fireworks, public street parties, and everybody in a celebratory move. And you can be right in the centre of it. Bastille Day, in Paris.
And if partying isn't your thing, the many other things you can only see in Paris will still be there. Take a trip up the Eiffel Tower, see Notre Dame Cathedral, the Louvre Art Gallery, the Champs Ellyses, take a boat trip on the river Seine, and everything else that makes Paris a unique city.