History of the Palace of Versailles but was never finished due to the king's death. Significant among Louis XV's contributions to Versailles were the "petit appartement du roi"; the "appartements de Mesdames", the "appartement du dauphin", the "appartement de la dauphine" on the ground floor; and the two private apartments of Louis XV – "petit appartement du roi au deuxième étage" (later transformed into the "appartement de Madame du Barry") and the "petit appartement du roi au troisième étage" – on the second and third floors of the palace. The crowning achievements of Louis XV's reign were the construction of the Opéra and the Petit Trianon.
Duchcov Chateau the classicist style and the garden in the romantic style. The Waldstein family left the place in 1921. At present, the château is state-owned and open to visitors. The garden grounds serve as a public park. Duchcov Chateau Duchcov () is the name of a grand house in the town of Duchcov, located about 8 km from Litvínov, in northern Bohemia, Czech Republic. The château houses a museum with a collection of historic furniture. Also on display is the painting and portrait gallery of the Waldsteins, including portraits of the most famous member of this family, Albrecht von Wallenstein, Duke