DAY 12: a visit to the Olympic Stadium and we get to see a martial arts tournament opening ceremony!!

The National Olympic Stadium, in Shinjuku, was built in 1958 for the Asian Games. The stadium, with a roof that resembles that of a Japanese traditional temple, became world famous during the 1964 Summer Olympics. designed by Tange Kenzo, and completed in 1964, it is now the Yoyogi National Gymnasium.

for more info see http://www.greatbuildings.com/buildings/Olympic_Arena.html