Tarjishki (aka 'Strupeshki' because the name of the closest village of Strupets) Monastery St. Prophet Elijah is located in the northern part of the Gola Glava (Bald Head) hill in the Western Fore-Balkan, around 4.5 km western of village of Strupets. The monastery is built on the right bank of Iskar river - at distance around 300 meters from it.
It is still unknown when the old monastery was built, but after Bulgaria was conquered by the Ottomans, it was destroyed and later restored again. The monastery has an important role in the fight against the Ottomans. In these times it has nested Bulgarian heroes as Vasil Levski and Nikola Obretenov.Today the monastery is repaired and constantly active. The small one-apse basilica is located in the wide yard and is made of stone with dimensions of 4.95х7.39m. In 1991 next to the church was constructed a new temple.
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.