The Bilderberg Group or Bilderberg conference is an unofficial annual invitation-only conference of around 130 guests, most of whom are persons of influence in the fields of business, academia, media, or politics.

Due to discussions by public officials and powerful business leaders (and others) being off the record, these annual meetings are the subject of much criticism (for circumventing the democratic process of discussing issues openly and publicly) and numerous conspiracy theories.

The elite group meets annually, in secret, at exclusive, five-star resorts throughout the world, normally in Europe, although sometimes in the United States or Canada. It has an office in Leiden, South Holland, Netherlands.

Source:
http://en.wikipedia.org/wiki/Bilderberg_Group