this link, and the World Heritage Sites in Mexico link I just shared, were compiled by Lynn Garry Salmon, a world traveler and scientist at Cal Tech specializing in the effects of pollution on cultural properties.
The World Digital Library will make available on the Internet, free of charge and in multilingual format, significant primary materials from cultures around the world, including manuscripts, maps, rare books, musical scores, recordings, films, prints, photographs, architectural drawings, and other significant cultural materials. The objectives of the World Digital Library are to promote international and inter-cultural understanding and awareness, provide resources to educators, expand non-English and non-Western content on the Internet, and to contribute to scholarly research.