Ali Qapu edifice or palace, on the west side of Naghshe Jahan square and front of Sheikh Lotf-ol-llah located in central part of Isfahan. This palace, as one of the most important architectural masterpieces in early eleven (A.H) century has global reputation. It has been built in 1054 A.H and Shah-Abbas-the-first was its founder. This palace has 6 floor and each floor has particular ornaments; ground floor has two halls had been devoted to administration and governance; third floor has large hall based on 18 high and sublime column and there is a marble beautiful pool in the center. In Safavid period, Ali Qapu was one of best palaces in the world.