 The single pile construction typical of its epoch carries three storeys, a basement supporting a ground floor and "piano nobile" with three attic floors above.The grand central entrance vestibule of stone was originally enclosed by exceptionally fine wrought iron grilles, which are today at the Louvre.Large bas-reliefs of The Seasons were executed by Gilles Guérin after drawings provided by Jacques Sarazin, who oversaw all the sculpture provided for Maisons.