Nine Mile Canyon, Carbon and Duchesne counties, Utah
Encompassing an estimated 10,000 petroglyphs and pictographs, the canyon is among 11 sites on The National Trust for Historic Preservation's 2004 list of the most endangered historic places in America. The nonprofit group says the site is threatened by extensive oil and gas exploration plans.
Credit: AP/Deseret Morning News
Cook County Hospital, Chicago
This historic hospital is known as "Chicago's version of Ellis Island," because of its service to the city's immigrants and the poor. It is also the setting for TV's "ER." But a new hospital has been built next door, and the building is slated for demolition. The National Trust says it could be converted to much-needed housing instead.
Gullah/Geechee Coast, South Carolina and Georgia
The coastline is the homeland of descendants of slaves, who have managed to retain a distinctive culture, traditions and language. It is being overrun by sprawling new resorts, subdivisions and strip malls.
Credit: AP/Savannah Morning News
Bethlehem Steel Plant, Bethlehem, Pa.
Steel from the plant was used to build the White House, Empire State Building and Golden Gate Bridge. It shuttered in 1998 and the company declared bankruptcy in 2001 before being bought by International Steel Group, which may demolish it.
Madison-Lenox Hotel, Detroit
The owner wants to demolish this 1901 hotel to build an 82-spot parking lot. The city's landmarks commission has refused to grant a demolition permit. The complex could be rehabilitated with the aim of aiding the revitalization of two adjacent historic neighborhoods.
Ridgewood Ranch, Willits, Calif.
The final home and resting place of the legendary horse Seabiscuit (pictured here with his offspring at the ranch, in 1941) is owned by a church association that lacks the resources to stabilize and maintain the 20 or so buildings that still stand.
2 Columbus Circle, New York City
The new owner of the Manhattan building plans renovations, which could threaten the building's distinctive features that have made it an icon of modernist design.
The state first appeared on the list in 1993 because it faced and onslaught of retail development. The National Trust says the threat is worse than ever, with Wal-Mart planning several new superstores that could spur sprawl, declining investment in downtowns, the loss of locally-owned businesses and the erosion of the state's unique sense of place.
Tobacco Barns, southern Maryland These historic barns date back over 400 years and are unique to the state. They have been abandoned or are being demolished because of state-sponsored buyout to farmers.
George Kraigher House, Brownsville, Texas
This 1937 house by famed architect Richard Neutra is vacant and is being destroyed by weather, neglect and vandalism.
Credit: nationaltrust.org/Jeff Tully
Elkmont Historic District, Great Smoky Mountains National Park, Tenn.
The Elkmont district has 72 wood-frame cabins and mountain resort buildings from the early 20th century - reminders of the period's tourism boom - but they are suffering from neglect and vandalism.