The Azadi Tower (Persian: ÈÑÌ ÂÒÇÏی, Borj-e Azadi meaning in English: Freedom Tower) (previously known as the Shahyād Āryāmehr Persian: ÔåíÇÏ ÂÑíÇãåÑ, English: King Memorial Tower) is the symbol of Tehran, and marks the entrance to the city of Tehran.
Built in 1971 in commemoration of the 2,500th anniversary of the Persian Empire, this "Gateway into Iran" was named the Shahyad Tower (meaning "Remembrance of the Shahs (Kings)") but changed to Azadi (Freedom) after the Iranian Revolution of 1979. It is a 50 metres (148 feet) tall tower and is completely clad in cut marble.
The architect, Hossein Amanat, won a competition to design the monument. Azadi Tower combines Sassanid and Islamic architecture styles. It is part of the Azadi cultural complex, located in Tehran's Azadi square in an area of some 50,000 m². There is a museum and several fountains underneath the tower.