International Cultural Property Protection. (Online)
United States State Department, Bureau of Educational and Cultural Affairs. Links to U.S. and international laws affecting issues of national cultural heritage.
UNESCO. World Heritage List. (Online)
The World Heritage List includes 890 properties forming part of the cultural and natural heritage which the World Heritage Committee considers as having outstanding universal value. Nodes are organized on a world map, or they may be reached through the individual site pages of the list itself. Includes OTVR tours.