Academy Awards | ATP International Series | United States Military Academy | International Monetary Fund | Russian Academy of Sciences | International Red Cross and Red Crescent Movement | ATP International Series Gold | International Space Station | Amnesty International | International Olympic Committee | architecture | National Academy of Sciences | American Academy of Arts and Sciences | BirdLife International | International Finance Corporation | International Organization for Standardization | Georgian architecture | Gothic architecture | Academy Award for Best Foreign Language Film | International Telecommunication Union | United States Naval Academy | International Criminal Court | United States Air Force Academy | Gothic Revival architecture | One Day International | International Nonproprietary Name | International Labour Organization | Romanesque architecture | International Civil Aviation Organization | International Boxing Federation |
In 1988, he became editor of the journal World Architecture: Journal of the International Academy of Architecture of the IAA - International Academy of Architecture in Sofia, Bulgaria.
Currently, Kollhoff is president of the society for the "Bauakademie", that has as its goal to reconstruct this building by the architect Karl Friedrich Schinkel, and to let it be reborn as the "Berlin International Academy of Architecture".