Initially, the Foundation had traditionally been organising anniversary conferences for the Laureates every five years. These took place on the occasion of the 10th anniversary (1990 in Biella, Italy), the 15th anniversary (1995 in Cologne, Germany), the 20th anniversary (1999 in Salzburg, Austria), the 25th anniversary (2005 in Salzburg), and the 30th anniversary (2010 in Bonn, Germany).
Held on the invitation of the City of Bonn, the 30th anniversary conference gathered 75 Laureates from all over the world. Civil society organisations, NGO’s, business, academia, activists, entrepreneurs and students had the possibility to meet the Laureates to discuss their work and solutions and to compare their approaches with their own. The event was supported by the Foundation for Environment and Development North Rhine-Westphalia and the Foundation for International Dialogue of the Savings Bank in Bonn.