Banj brdo (before known as Šehitluci) is a 431 meter hill as well as tourist and recreation place in Banja Luka, part of the Bjeljavina mountain. On top of the hill stands the Monument to fallen Krajina soldiers, a work of Antun Augustinčić and dedicated to the dead soldiers of the People Liberation War during the Second World War in Bosanska Krajina. It is possible to see the whole city of Banja Luka from this place.
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.