The United Nations Educational, Scientific and Cultural Organization (UNESCO) designates World Heritage Sites of outstanding universal value to cultural or natural heritage which have been nominated by countries signatories to the UNESCO World Heritage Convention, established in 1972.
[1] Cultural heritage consists of monuments (such as architectural works, monumental sculptures, or inscriptions), groups of buildings, and sites (including archaeological sites).
With German reunification, East Germany was dissolved on 3 October 1990.
The Dresden Elbe Valley, which was listed as endangered in July 2006, was eventually delisted in June 2009, making it one of the only three sites in the world to have been removed from the World Heritage Site register.
[6] Cologne Cathedral was listed as endangered from 2006 to 2008 due to plans to construct high-rise buildings nearby that would threaten the integrity of the property.