The Park and the Museums are open
to the public on Sundays, and during
holidays from 2PM to 6PM,
from March 15th till November 15th .


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This museum includes exceptional documents: international medals, the key to the city of Venice, hand-written correspondence between Gaston Palewski and Charles de Gaulle.
Gaston Palewski, who was born on March 20, 1901 in Paris and died on September 3, 1984 at Le Château du Marais, is a French politician and diplomat of Polish origin, President of the “Conseil Constitutionel” from 1965 until 1974. Between 1924 and 1925, he was political attaché for the Cabinet of Marshal Lyautey in Rabat, then, from 1928, he became Principal Private Secretary to Paul Reynaud, including the Ministry of Finance. It is in this function that he met the future General de Gaulle in 1934. During the war he performed many military flights. He joined Charles de Gaulle in London in 1940. He participated in battles against the Italians in Ethiopia. He was Principal Private Secretary to General de Gaulle from 1942 until 1946. In 1951 he was elected Member of the RFP party, and from 1953 to 1955, he was Vice President of the National Assembly. He was Delegated Minister to Edgar Faure, President of the Council in charge of atomic affairs, Saharan affairs and defense coordination from February 23, 1955. He was promoting the second atomic plan. He resigned in October 1955, as a result of disagreement with the government policy in Algeria.
From 1965 to 1974, he was President of the Constitutional Council. In 1968 he was elected Member of the Academy of Fine Arts. From 1957 to 1962, he was French Ambassador to Italy. On April 14, 1962 Georges Pompidou appointed him Minister of State for Scientific Research and Nuclear and Space Issues, the positions he held until February 22, 1965. He was the first to hold this post.
In 1969, he married Helen-Violette de Talleyrand-Périgord, Duchess of Sagan (1915-2003), daughter of Helie, Duke of Talleyrand and Prince of Sagan (1859-1937) and Princess, born Anna Gould (1875 - 1961), after she divorced her husband Count de Pourtales. Between 1945 and 1974, he was the lover of the English novelist Nancy Mitford in London, who then came to live in Paris.
He exercised a great influence within the Gaullist circles and in the French government.


The museum offers collections of paintings, costumes and relics dating from the days of the literary salon of Madame de La Briche. This event used to take place at the Château du Marais.
In fact, towards the end of May, Madame de La Briche used to stay at her summer quarters at Le Château du Marais until early October. Here, she hosted members of high society including the old lover of Sophie D'Holbach, the poet Jean-François de Saint-Lambert, the fabulist Florian - who speaks of the Marais as "the promised land" - Abbot Morellet, Jean-François de La Harpe, Suard, François-René de Chateaubriand. Her reciter, Laborie, also Caroline de Talleyrand’s preceptor, became Private Secretary to the Ministry of Foreign Affairs in 1804 before founding the Journal of Debates with his friend Louis-François Bertin. She managed to live through the French Revolution without the slightest concern, and died very old under the July Monarchy.


The museum has a large iconography which offers a journey through the history of France and a better understanding of the Talleyrand and Courland alliances.
In 1808, the lord of Valençay abandoned the princes of Spain in assigned residence to attend the secret meeting between Napoleon and Tsar Alexander I at Erfurt. There, he became acquainted with one of the most influential women of the St. Petersburg court, Anne Charlotte Dorothea Medem, widow of Peter Biron, Duke of Courland. Was it his aversion for Napoleonic excess or the intelligence and the charm of this woman still young at 47? Talleyrand once covertly prompted the Tsar to resist the French Emperor’s advances. And to seal their reconciliation, he negotiated his nephew Edmond’s marriage with the youngest of the mature and vivacious Duchess Dorothea’s four daughters, who was just over 15 years old: the union was celebrated in April 1809.