Today is La Fête Nationale, which celebrates the anniversary of the storming of La Bastille. It is celebrated in Paris with a huge military parade that goes along Arc de Triomphe to the Place de la Concorde, along with a fireworks show in the evening at the Eiffel Tower. Last year, I was in Paris celebrating this day with a picnic under the Eiffel Tower and the fireworks show in the evening! (Oh how I miss Paris!)
I highly recommend a trip to Paris any time of the year but it is especially fun during this celebration with the parade, fireworks and picnics.