In the first Global Summit on Peace through Tourism (Nov. 2000), more than 450 world leaders of the travel and tourism industry ratified an "Amman Declaration" that recognized travel and tourism as a global peace industry. The document committed itself to building a culture of peace through tourism that supports tourism as a fundamental human activity, free of undue restriction and respectful of human differences and cultural diversity. "Peaceful relationships among all people should be promoted and nurtured through sustainable tourism," the document said. It called for protection and restoration of historical monuments and landmarks, accessible to all people, as "valuable assets for humanity and legacies for future generations." Preservation and wise use of the environment, coupled with ecological balance, "are essential to the future of tourism" while acknowledging "ancient wisdom and care for the Earth.