Credit: Photo by Krystyn Pecora

Frank Lloyd Wright’s Spring HouseTallahassee, Florida

Since 1988, the National Trust has used its list of America's 11 Most Endangered Historic Places to raise awareness about the threats facing some of the nation's greatest treasures. The list, which has identified more than 250 sites to date, has been so successful in galvanizing preservation efforts that only a handful of sites have been lost. Dozens of sites have been saved through the tireless work of the National Trust, its partners, and local preservationists across the country. Many more sites are now considered "favorable" and are on the path to a positive solution. Still, others remain threatened, and the National Trust and its partners continue in their efforts to protect these important endangered places.

Credit: Photo by Ron Cogswell

Shockoe Bottom Richmond, Virginia

Once a center of slave trade in America, Shockoe Bottom was home to Solomon Northup’s jail in ''12 Years a Slave'' and contains numerous artifacts of the slave trade that took place in Shockoe Bottom.

Credit: Photo by Burger International Photography

The Palisades Englewood Cliffs, New Jersey

Several generations have cherished the scenic Palisades cliffs along the Hudson River. Despite the Palisades designation as a National Historic Landmark, the LG Corporation plans to build an office tower along these cliffs in New Jersey, forever altering the landscape.

Credit: Photo by National Trust for Historic Preservation

Battle Mountain SanitariumHot Springs, South Dakota

Battle Mountain Sanitarium has provided medical care to veterans in the region for more than a century, and is one of the few properties owned by the Department of Veterans Affairs to be designated a National Historic Landmark.

Credit: Photo courtesy Historic Wintersburg

Historic Wintersburg Huntington Beach, California

Historic Wintersburg is a Japanese American pioneer property that tells the story of Japanese American immigrants in Southern California.

See full list from website

> via preservationnation.org