The Alte Nahebrücke (Old Nahe Bridge) is a medieval stone arch bridge in Bad Kreuznach. It originally spanned the Nahe river and a neighbouring canal. Only the section spanning the canal remains intact. With four houses on its piers, it is one of the few remaining bridges in the world that has buildings on it.
Alte Nahebrücke was built around 1300 by Simon II, Count of Sponheim-Kreuznach, who ruled the town, to replace a wooden bridge which connected settlements on either side of the Nahe river. It provided an important connection on the road from to Mainz to Trier, and it formed part of the town fortifications. Towers on the bridge, one of which was for a period used as a prison, were destroyed by French troops in the late 17th century.
The bridge has two arms; one spanning the Nahe river and another, which supports the old buildings, spanning the Mühlenteich (mill pond) canal, which is parallel to the river. On Friday, 16 March 1945 the arm of the bridge spanning the river was blown up by German troops to hinder the approach of American forces. This destroyed a Baroque style Christian stone cross (a 1934 reproduction of the original) which was on the sixth pier of the bridge, and a statue of Saint John of Nepomuk, the bridge's patron saint, which was on the seventh pier.
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.