The Osaka central gymnasium has Kondo ashram,training room,Judo ashram,and a sud arena other than the huge main arena which has 10,000 seating capacity.The building half built in the underground has its roof all covered by plants,vines and trees which creates the green landscape merging with the park.You can walk around in the roof garden of the gymnasium and it is used sa a place of relaxation and amusement by the local residences.The picture shows the temperature difference of the gymasium surroundings areas covered by green and the concrete area next to the gymnasium.It is clearly shown in the picture that in the surrounding area of the gymnasium the plants blocks the sunlight and creates a cool spot and at the same time creates a cool island as a extensive green park.