Milad Tower, with its height of 435 m (1,427 ft), is the tallest in Iran, the fifth tallest telecommunication tower in the world. Milad Tower consists of five main parts: foundation, transition (lobby) structure, shaft, head structure and antenna mast. The lobby structure consists of six floors. The first three floors consist of 63 trade units, 11 food courts, a cafeteria and a commercial products exhibition, which is supposed to be 260 m2 (2,800 sq ft).The first and second floors underground consist of official and installing sections and data center. The ground floor is devoted to the entrance and visitors reception. The shaft is a concrete structure which is 315 m-high (1,033 ft) from the ground floor. In three different sides of it 6 elevators are used to transfer the visitors to the head of the tower at the speed of 7 m/s (0.0070 km/s) and there is an emergency staircase exists at the fourth side.The head of the tower is a steel structure weighing about 25,000 tonnes and consisting of 12 floors. In the top floors of the tower, fire-immune areas were built as a refuge zone, a closed observation deck, a cafeteria, a public art gallery, an open observation deck, a revolving restaurant, telecommunication floors, a VIP restaurant, Mechanical floors, and a sky dome.The four-stage antenna mast is 120 m-high (390 ft). The lower floor of the mast is for the adjustment of public users' telecommunication antennas and the three upper floors are devoted to the antenna of radio and television organisation of the Islamic Republic of Iran.Furthermore, the complex features a parking area of 27,000 m2 (290,000 sq ft), a large computer and telecommunications unit, a cultural and scientific unit, a commercial transaction centre, a temporary showroom for exhibiting products, a specialised library, an exhibition hall, and an administrative unit. Milad Tower has an octagonal base, symbolising traditional Persian architecture.The client was Yadman Sazeh Co. a representative of Tehran Municipality. The tower has been designed by Dr. M.R. Hafezi and was built by Boland Payeh Co.