Immeuble locatif à la porte Molitor is the first appartment block in the world with with glazed façades. It was designed by Le Corbusier in 1931-1934. At the Fourth International Congress of Modern Architecture in Athens, Le Corbusier claimed that the elements of planning were: the sky, trees, steel and cement, and in that order and hierarchy. He claimed that the inhabitants of a city who lived with these elements would find themselves holding what he called 'essential joys'. This building serves as a control or prototype. Building regulations in Paris at the time meant there were restrictions for the alignment of buildings to the street. The position of the site was deeply imbedded within the existent urban fabric, hence a challenge arose to design a solution which communicated to the surroundings landscape.
In July 2016, the Molitor building and several other works by Le Corbusier were inscribed as UNESCO World Heritage Sites.
References: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.