Rambouillet (, , ) is a subprefecture of the Yvelines department in the Île-de-France region of France. It is located beyond the outskirts of Paris, southwest of its centre. In 2018, the commune had a population of 26,933. Rambouillet lies on the edge of the vast Forest of Rambouillet (Forêt de Rambouillet or Forêt de l'Yveline); it is famous for its historical castle, the Château de Rambouillet, which hosted several international summits. Due to its proximity to Paris and Versailles, Rambouillet has long been an occasional seat of government. Population Transport Rambouillet is served by the SNCF Rambouillet railway station on the Transilien Line N suburban rail line, and on the regional line to Chartres and Le Mans. Features The Château de Rambouillet, a former medieval fortress, was acquired by Louis XVI of France in 1783 as a private residence because of its ideal situation in the game-rich forest of Rambouillet. It became a bien national during the French Revolution of 1789, and one of the imperial residences of Napoléon I during the First French Empire. At the time of the Bourbon Restoration, the castle became royal residence, and it is there that Charles X signed his abdication on 2 August 1830. Sometimes neglected at times of political unrest, the château de Rambouillet became the official summer residence of the French President of the Republic after President Félix Faure chose it as summer residence for himself and his family in 1896; Rambouillet thus became the official summer residence of the Presidents of the Third Republic and has retained its position ever since. The Palais du Roi de Rome. In 1784, on a parcel adjacent to the gardens of the castle, Louis XVI had ordered the construction of the Hôtel du Gouvernement, which was restored during the reign of Napoléon I, and renamed Palais du Roi de Rome as the official Rambouillet residence of Napoleon's infant son. Its entrance is situated in the rue Charles de Gaulle, Rambouillet's main street. The Hôtel de Ville, the former Bailliage (Bailiwicks building) was built in 1786 at the request of Louis XVI by the architect Jacques-Jean Thévenin. It was given by Napoléon I to the inhabitants of Rambouillet to serve as their City Hall. The inscription over the doors of the City Hall reads "Donated to the inhabitants of Rambouillet by Napoleon the Great, [in the] Year 1809". The new Saint-Lubin church was built