connected the two residential building body. The architect is unknown. From 1553, Jean du Thier appealed to many foreign artists who were working for King Henry II to undertake the interior decoration. The painter Niccolò dell'Abbate decorated with frescoes in the destruction of the north wing of the nineteenth century. Joiner King Francisque Scibec Carpi carved woodwork of the study, the Cabinet of Bells. At the foot of the windows of the south wing, Jean du Thier created a typical Renaissance garden, strictly scheduled. He presented collections of rare plants meet the owner of the botanical tastes. The château was designed and described in the book of Androuet Hoop, The most excellent buildings of France (Second Volume, 1579). Florimond Robertet took over Beauregard in 1566. On the death of Jean Thier in 1559, Catherine de' Medici appointed Robertet as Secretary of State for Finance. He undertook no developments to Beauregard, then being absorbed by the construction of his castle of Bury. The heirs of Florimond Robertet gave way to Paul Beauregard Ardier in 1617. The new owner of the château had to withdraw from the service of Louis XIII after 55 years spent with the kings Henry III, Henry IV and Louis XIII. Controller General of War, Grand Treasurer of the savings, he was 72 years old when he devoted himself to embellish his new domain. He destroyed the old house to surround the central gallery of modern two symmetrical wings. It also gave the public their current appearance. The major work of Paul Ardier was the setting for the Portrait Gallery which also occupied the next two generations. His son, Paul Ardier, President of the Chamber of Accounts and the husband of his granddaughter, Gaspard de Fieubet, Chancellor of the Queen Mother Anne of Austria, continued his work. The land of Beauregard was built by Viscount Louis XIV. The domain of Beauregard left the Ardier wealth in 1816 to be sold to the Viscount of Préval. The Comtesse de Sainte Aldegonde, born Adelaide Josephine Bourlon Chavagne, widow of the Duke of Castiglione, succeeded him to the château. On 8 October 1839, his daughter, Marie-Josephine Valentine (1820-1891), married to Alexandre-Edmond de Talleyrand-Périgord castle, Duke of Dino and son of the Duke of Talleyrand; she became the mistress of wealthy Russian subject Anatole Demidoff, made Prince of San Donato in 1840 by ducal decree and ephemeral husband of Mathilde-Laetizia Bonaparte, daughter