Since celebrating its 100th anniversary in 1991, Obayashi has continued to participate in major projects. The Company played a part in infrastructure projects such as construction of Kansai International Airport and the Tokyo Bay Aqua-Line and major building construction projects such as Tokyo International Forum, Shinagawa InterCity, the Marunouchi Building, the Roppongi Hills Mori Tower, and the TOKYO SKYTREE®.