Claimed Verified by it's Owner Group of 20 No permanent headquarters; annually chaired intergovernmental forum
Claimed Verified by it's Owner Antarctic Treaty Secretariat Maipú 757, Piso 4, C1006ACI Buenos Aires, Argentina
Claimed Verified by it's Owner European Patent Organisation Bob-van-Benthem-Platz 1, 80469 Munich, Germany
Claimed Verified by it's Owner Asia Cooperation Dialogue No permanent headquarters; chair-supported regional forum
Claimed Verified by it's Owner International Network for Bamboo and Rattan No. 8 Future Science Park South Road, Haidian District, Beijing 100102, China
Claimed Verified by it's Owner Trilateral Cooperation Secretariat S-Tower, 20th Floor, 82 Jong-ro, Jongno-gu, Seoul 03188, South Korea