The Festival of Reason was held at Notre Dame, Paris.
The Festival of Reason was part of France’s dechristianization, an attempt to banish Christianity. The Festival of Reason ordered that all Christian Churches be transformed into Temples of Reason. On this day across the country, altars were dismantled, and the churches were transformed. This was a new religious concept drawn up by the French government called the Cult of Reason, and this was a catalyst for the French revolution, as Christians had their religious beliefs and places of worship taken from them.