Azadi Tower has been the longstanding symbol of Tehran. Built in 1971 in commemoration of the 2,500th anniversary of the first Persian empire, the Azadi Tower in Tehran is a “gateway into the city. ” It was named the “Shahyad” (King’s Memorial) in honor of the Shah, but was changed to “Azadi Tower” (Freedom) after the Revolution of 1979. combines elements of Sassanid and Islamic architecture. . After being closed for years, the tower reopened in 2006. It is 50 meters (164 ft) tall and completely clad in cut marble. The main display is occupied by a copy of the Cyrus Cylinder (the original tours the world, but lives in the British Museum).