Athens Olympic Sports Complex

The Athens Olympic Sports Complex (Ολυμπιακό Αθλητικό Κέντρο Αθήνας u OAKA, in Greek) is located in Marousi, northeast of the city of Athens, Greece.

Designed by the Spanish architect Santiago Calatrava, it was built to host the sporting events of the Athens 2004 Olympic and Paralympic Games.

The Sports Complex includes:

• The Olympic Stadium of Athens, with an approximate capacity of 75,000 spectators
• The Techado Olympic Pavilion that hosted some of the gymnastics events and the basketball finish. In 2006, it hosted the LI edition of the Eurovision Festival.
• The Olympic Aquatic Center, where swimming, synchronized swimming and water polo events were held.
• The Olympic Velódromo, with a capacity of 5,250 spectators, in which the speed cycling events were held.
• The Tennis Olympic Center, which has 16 courts.