Houdan has not lacked animations since the Middle Ages, and has kept its many historical traditions.
The Houdan market is held every Friday morning.
A dance festival takes place every year in March with amateur shows.
Houdan celebrates in July its feast of Saint-Christophe with a funeral fair and a beautiful flower-filled corso.
During the last weekend of September, during two days, the fair Saint-Matthieu takes its quarters. It is one of the oldest fairs in Europe; It would go back to 1065.
