The Azadi Tower (, ; "Freedom Tower"), formerly known as the Shahyad Tower (, ; "Shah's Memorial Tower"), is a monument on Azadi Square in Tehran, Iran. It is one of the landmarks of Tehran, marking the west entrance to the city, and is part of the Azadi Cultural Complex, which also includes an underground museum. The tower is about tall and is completely clad in cut marble. It was commissioned by Mohammad Reza Pahlavi, the last Shah of Iran, to mark the 2,500-year celebration of the Persian Empire and completed in 1971. It also serves as the country's kilometre zero. After winning a competition, architect Hossein Amanat was tasked to design the tower. His ideas were based upon classical and post-classical Iranian architecture, popular influences on art in the 1960s following the White Revolution. Iran's increasing wealth sparked modernization programs and sent the art industry into a renaissance-like period. History Name The first name associated with this monument was Darvāze-ye Kuroš ("Gate of Cyrus"), and at the time of the Centenary Celebrations, Asadollah Alam, who chaired the Council of Celebrations, referred to the monument as Darvāze-ye Šāhanšāhi ("Imperial Gate"). The monument's ultimate official name was decided before the announcement of the competition for the monument's design in September 1966. Bahram Farahvashi, a scholar and professor of ancient Iranian languages who worked with the Council of Celebrations, came up with the officially designated name of the structure, Šahyād Āryāmehr. Built in 1971 in commemoration of the 2,500th year of the foundation of the Imperial State of Iran, this "gateway into Tehran" was named the Šahyād ("Shah's Memorial") in honor of the Shah (Mohammad Reza Pahlavi), but was later renamed Āzādi ("Freedom") following the 1979 Revolution. Construction During the 1960s, Iran became a major oil-exporting country, and using the newly-found wealth, the Shah launched programs to modernize and industrialize the country. This followed a cultural growth that architect Hossein Amanat describes as "a mini renaissance". In 1966, Amanat won a competition to design the building. Due to governmental concerns, Amanat was required to sign underneath contracts "on condition of the approval of the Council of Celebrations", which would serve as the client. Amanat planned to contract the British company of Arup to assist in the structural design of the tower, as he was impressed by their contributions towards the design and construction of the Sydney Opera House. He initially faced opposition