The tower in front is the Hollivrap monastery. Here must be introduced Gregory. He is an Armenian missionary pioneer. In the third century AD, the Armenian king ordered the cult Gregory to be put in a dungeon, one of which is 13 years. When Tiridates III was seriously ill and there was no medical treatment, it was Gregory who made him reborn. So in 301 AD, the Armenian king prescribed religion as a state religion, and was the first country in the world to make religion a state religion. The entrance to the Gregory cellar was held that year. Many people did not think that the reason for Gregory's survival was because a woman kept delivering food and water to him through the secret passage.