Architect: Kenzo Tange
Location: Tokyo, Japan
Year built: 1964
The building is a sporting center and hosted the Olympics in 1964.
The building has an aerodynamic desing, monumental and impressive. It is built of reinforced concrete, but in spite of the monumental size maintains a close relationship with the surrounding environment.
The structural concept is based on a main backbone from which branch cables of smaller steel to form a tent like roof.
It consists of two buildings, one in which they were carried out competitions of basketball and another there have been some swimming competitions.
Inside the building you understand the structure backbone and the tent.
sources; https://www.google.it/search?hl=it&site=imghp&tbm=isch&source=hp&biw=1454&bih=690&q=Yoyogi+National+Gymnasium&oq=Yoyogi+National+Gymnasium&gs_l=img.12..0.1124.1124.0.19188.8.131.52.0.0.0.44.184.108.40.206…0.0.0..1ac.2.15.img.QsPMe0nBv6k; http://2.bp.blogspot.com/-YnOmUUFuUqY/TofszpamYtI/AAAAAAAANHA/vTfrDgIfCl0/s1600/DSC_3247%2Bcopy.jpg; http://architecturalmoleskine.blogspot.it/2011/10/kenzo-tange-yoyogi-national-gymnasium.html