The abandoned Château de Carnelle (Castle Franconville) designed for André Philippe Alfred Regnier, Duke of Massa, in 1875 by renowned architect Hippolyte Destailleur. Located on the edge of the forest Carnelle, in the Ile de France region of France. This land was given to the monks of Saint-Denis by Charles V. The Duke of Massa, childless, donated his estate to the city of Paris and it was converted into a sanatorium in 1930. The castle was finally closed in 1992.
Paris - Ile de la Cité, the island on the Seine on which you can visit Notre-Dame and La Sainte Chapelle. The other island is Saint-Louis, known for its ice cream. On the bridge between the two islands there are always interesting street performers.