Set on a hilltop surrounded by vineyards and cypresses, the Gallo-Roman villa of Séviac was a luxurious residence, spread over almost 6500m2. It is today one of the largest Gallo-Roman villas known in the south-west of France. The villa was built in the 2nd century AD and reconstructed in the 3rd and 4th centuries. Later in the 8th and 9th centuries the place was used for a church, burials and necropolis. The villa is distinguished by its exceptional set of Roman age mosaics (over 625m2) and vast baths.
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.