The Benaki Museum, established and endowed in 1930 by Antonis Benakis, houses Greek works of art from the prehistorical to the modern times, an extensive collection of Asian art, hosts periodic exhibitions and maintains a state-of-the-art restoration and conservation workshop. Although the museum initially housed a collection that included Islamic art, Chinese porcelain and exhibits on toys, its 2000 re-opening led to the creation of satellite museums that focused on specific collections, allowing the main museum to focus on Greek culture over the span of the country's history.
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.