Bastille Day 2022: France adopted the 14th of July as a national holiday in 1880. The official name of the holiday in France is Fête Nationale, which also serves as a symbol of national harmony
This day is commemorated in remembrance of the fall of the Bastille. The Bastille, which was once constructed as a medieval stronghold, later turned into a state prison. Political prisoners who were arrested by the police for trial were frequently housed there. Some prisoners were kept on the king’s express command which was unappealable.
Source: Bastille Day 2022: All You Need to Know About the French National Day