The European Archaeological Park at Bliesbruck-Reinheim, in the German municipality of Gersheim and the French municipality of Bliesbruck, is a cross-border project which combines excavations and reconstructions of Celtic and Roman finds with exhibition and educational facilities. It was created in 1989 as a result of the archaeological work being done on both sides of the Franco-German border. Together with archaeological evidence from the Mesolithic Period, the Bronze Age, and the period of the Germanic migrations, the Celtic and Roman finds from the Iron Age bear witness to a history of continuous settlement in the Blies Valley that spans a period of 10,000 years.
Probably the most interesting excavation on the area is the Tomb of the Celtic Princess of Reinheim, dating from the 4th century BC. It is a woman's grave that was filled with exceptionally rich funerary objects. The burial chamber, constructed of oaken beams, was covered over by a massive mound of earth.
There is also a Roman villa in Reinheim. This very large complex includes courtyard walls enclosing an area 300 metres long and 135 metres wide with a main building to the north that measures almost 80 by 62 metres. One portion of the building in the north end of the west wing is thought to have been the villa's private thermal baths, due to the layout of its rooms and the discovery of water channels and fragments of cylindrical tiles (tubuli) attesting to the existence of under-floor heating (hypocaust).
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.