Answer:
In France, the 14th of July is called "Bastille day" or "le quatorze juillet" (or Fête Nationale).
It commemorates a celebration in 1790, which itself honored the day in 1789 when the Bastille prison was stormed by a mob, marking the event as the beginning of the French Revolution. The citizens were reportedly only looking for ammunition in the fortress, but it was also a symbol of Royal authority in Paris.