The Gallé-Juillet museum groups two houses built in the location of the fort of Creil, situated in the court of the city hall: the house Gallé-Juillet and the house of the earthenware. It is certified Museum of France since 2002, and been a member, with the municipal archives, of the service heritage of Creil.
The house Gallé-Juillet redraws the life of a creilloise family in the 19th century. It keeps a collection of decorative arts and fine arts(School of Fine Arts) of more than 5000 works. The history of the earthenware factory of Creil is evoked through the exhibition of about 600 chinas of Creil, explanatory panels, and the provision of tape guides. The earthenware collections of the museum grow rich year after year. The Gallo-Roman past of Creil is emphasized by the presentation of the treasure of the lock, the treasure established by several hundred silver coins and bronze dating the 3rd century later Jesus Christ.