DIORAMA has regularly provided PRESS OFFICE and other back-up services for the Posidonia International Shipping Exhibition and other high-profile events, has organized PRODUCT PRESENTATIONS AND SEMINARS for many leading marine suppliers and service companies, and was local organizer for the 41st Bildeberg Meetings held in Athens in April 1993.

The company has also actively been involved in organization for the Cycle of Patmos of a series of Religion, Science & the Environment SYMPOSIA held afloat in the East Mediterranean, 1995, in the Black Sea, 1997, sailing down the Danube from Germany to the Black Sea delta, 1999, in the Adriatic Sea, 2002 and in the Amazon River, 2006, under the aegises of the Ecumenical Patriarch Batholomew I, HRH Prince Philip as international president of WWF, European Commission presidents Jacques Santer and Romano Prodi and the Secretary-General of the United Nations Kofi Annan.