Halidzor fortress is an Armenian architectural complex of the late mid-centuries, which is located in Kapan area. Because of its inaccessible situation, it became the main fortress during Davit Bek’s liberation fight in 18c, and the center of Armenian kingdom of Syunik. It is located on the shores of the Voghji River. The walls of the fortress have abnormal square-like form. The only circular pyramid is on the south-western corner of the fort. There are two entrances from the southern and the northern sides. The church is made of large untreated basalt stones. The two-store constructions from both the southern and the northern sides of the church were used as entries. The great defense system of the fortress helped David Bek’s army to withstand the attacks of the Turkish army with very little number of soldiers.