announced that main agreement was signed with the German construction company named ‘’Alpine Bau Deutschland AG’’ and necessary preparation had begun. Arena construction was completed on 16 April 2012. The capacity of this hall is 25,000 spectators and VIP rooms in the arena. The magnificent lighting system used in the Baku Crystal Hall consists of over 2,500 projectors and more than 3,000 meters of cable which were brought from Germany. Light-emitting diodes with an area of more than 1,300 m are placed in the form of electronic windows on the scene of the Baku Crystal Hall. Baku Olympic Stadium The construction of the stadium has started on June 6, 2011 with the participation of President Ilham Aliyev, former FIFA and UEFA presidents - Sepp Blatter and Michel Platini respectively. The opening ceremony of Baku Olympic Stadium was held on March 6, 2015 and stadium is considered to hold major sport events in Azerbaijan. This multifunctional stadium is the largest stadium in Azerbaijan with total capacity of 68,700 seats for spectators. The Baku Olympic Stadium is chosen to be the 7th best stadium in the world by StadiumDB. The construction of the stadium was given to TEKFEN which is the Turkish company with Design &Build contracts. Several hotels, parking spaces (total 3,617 car places) and green space (81,574 square meters) has been created in the area around the stadium. Baku Olympic Stadium is consisting of VVIP, VIP - CIP Suites total 127 each with 720 spectator's capacity, 1,800 Seating Capacity Warm Up Area, MEP Building, Info Centre and Two External Buildings. National Gymnastics Arena The National Gymnastics Arena, designed for 9,000 people, is located close to the Koroghlu metro station on the Heydar Aliyev highway. The number of seats can be altered from 5,000 to 9,000 seats depending on the capacity and nature of the competition. The Arena has 2 stages, VIP category for serving sponsors on each floor, resting rooms, and a dining room. Gallery See also Architecture of Baku Culture of Azerbaijan References Seyran Valiyev and Fuad Akhundov both contributed to this article. The book "Baku" by Leonid Bretanskiy was also referenced (Iskusstvo (Art) Publishing House: Leningrad, Moscow, 1970).