Park Record Media Center

This Frank Lloyd Wrightís Spring House in Tallahassee, Fla., one of America's 11 most endangered historic places. Designed by Frank Lloyd Wright and constructed in 1954, Spring House is the only built private residence designed by Wright in Florida. Its novel ìhemicycleî form is one of very few surviving homes that Wright designed in this style. Preservationists say weather and the ravages of time have deteriorated the building. (AP Photo/National Trust for Historic Preservation) ( Endangered Historic Places )

Battle Mountain Sanitarium in Hot Springs, S.D., is one of America's 11 most endangered historic places. 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. Today, the agency is moving forward with a proposal to abandon the facility. (AP Photo/Jennifer Buddenborg, National Trust for Historic Preservation) ( Endangered Historic Places )

The Palisades, in Englewood Cliffs, N.J., is one of America's 11 most endangered historic places. Several generations have cherished the scenic Palisades cliffs along the Hudson River. Despite its designation as a National Historic Landmark, the LG Corporation plans to build an office tower along the cliffs in New Jersey, forever altering the landscape, preservationists say. (AP Photo/Paul W. Romaine via National Trust for Historic Preservation) ( Endangered Historic Places )

The Music Hall in Cincinnati, Ohio, is one of America's 11 most endangered historic places. A National Historic Landmark, Music Hall has played a significant role in the cultural fabric of Cincinnati since it was built in 1878. Today, preservationists say it is deteriorating and in need of extensive repairs. (AP Photo/Cincinnati Symphony Orchestra via National Trust for Historic Preservation) ( Endangered Historic Places )

Historic Wintersburg in Huntington Beach, Calif., is one of America's 11 most endangered historic places. Historic Wintersburg, a Japanese-American pioneer property with several existing structures that tell the story of Japanese-American immigrants in Southern California. Preservationists say itís now threatened by demolition. (AP Photo/Chris Jepsen via the Orange County Archives and the National Trust for Historic Preservation) ( Endangered Historic Places )

Bay Harborís East Island in Miami-Dade County, Fla., is one of America's 11 most endangered historic places. Preservationists say Bay Harborís East Islandís collection of Miami Modern buildings are threatened with demolition by development proposals. (AP Photo/Miami-Dade County Office of Historic Preservation via National Trust for Historic Preservation) ( Endangered Historic Places )

Shockoe Bottom in Richmond, Va., is one of America's 11 most endangered historic places. Once a center of slave trade in America, Shockoe Bottom was home to Solomon Northupís jail in "12 Years a Slave" and contains numerous underground artifacts. Preservationists say the site is threatened by potential development of a minor league baseball stadium. (AP Photo/Tvnewsbridge via National Trust for Historic Preservation) ( Endangered Historic Places )

The Mokuaikaua Church in Kailua Village, Kona, Hawaii, is one of America's 11 most endangered historic places. Mokuaikaua Church, completed in 1837, is Hawaii's first Christian Church. Preservationists say it is at risk from both earthquake damage and natural wear and tear. (AP Photo/National Trust for Historic Preservation) ( Endangered Historic Places )

The Palladium Building in St. Louis, Mo., is one of America's 11 most endangered historic places. The Palladium Building housed a nightclub in the 1940s that, although restricted to a whites-only clientele, played a prominent role in the development of African-American music. Preservationists say it now faces an uncertain future because it is not protected by local or national historic designations. (AP Photo/Michael Allen via National Trust for Historic Preservation) ( Endangered Historic Places )

The Chattanooga State Office Building in Chattanooga, Tenn., is one of America's 11 most endangered historic places. Preservationists say the Chattanooga State Office Building, a midcentury landmark in the heart of downtown, is threatened with demolition by its new owner. (AP Photo/National Trust for Historic Preservation) ( Endangered Historic Places )