The Musée d'Orsay was built between 1898 and 1900. The museum holds mainly French art dating from 1848 to 1915, including paintings, sculptures, furniture, and photography. It houses the largest collection of impressionist and post-impressionist masterpieces in the world, by painters including Monet, Manet, Degas, Renoir, Cézanne, Seurat, Sisley, Gauguin and Van Gogh. Many of these works were held at the Galerie nationale du Jeu de Paume prior to the museum's opening in 1986.
The museum building was originally a railway station, Gare d'Orsay, constructed for the Chemin de Fer de Paris à Orléans and finished in time for the 1900 Exposition Universelle to the design of three architects: Lucien Magne, Émile Bénard and Victor Laloux. It was the terminus for the railways of southwestern France until 1939.
By 1939 the station's short platforms had become unsuitable for the longer trains that had come to be used for mainline services. After 1939 it was used for suburban services and part of it became a mailing centre during World War II. It was then used as a set for several films, such as Kafka's The Trial adapted by Orson Welles, and as a haven for the Renaud–Barrault Theatre Company and for auctioneers, while the Hôtel Drouot was being rebuilt.
The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.