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20 landmarks threatened by climate change

Iconic landmarks and heritage sites hold extreme cultural and historic significance for communities around the globe. They hold meaning that goes deeper than their exterior; however, many of these treasured sites are currently threatened by the changing climate.

"Sea level rise, coastal erosion, increased flooding, heavy rains, and more frequent large wildfires are damaging archaeological resources, historic buildings, and cultural landscapes across the nation," according to a 2014 report from UNESCO, the United Nations Environment Programme (UNEP) and the Union of Concerned Scientists (UCS).

Organizations such as UNESCO and the National Trust for Historic Preservation are working to understand the immediate and long-term threats posed by climate change on these historic sites. In addition, they hope to preserve these vulnerable landmarks.

"Climate change presents a new normal for everybody," Jeana Wiser, Associate Project Manager for the Preservation Green Lab, the research arm of the National Trust for Historic Preservation, said.

"It presents new threats to landmarks everywhere, ranging from increased flooding events to increased wildfires. It presents new threats to these cultural, historic places that needs to be recognized," Wiser said.