Today, to mark the 30th anniversary of the America’s 11 Most Endangered Historic Places list and how it has been a catalyst for the preservation of threatened historic sites around the country, the National Trust is issuing a retrospective list culled from the nearly 300 sites named to the program since its inception. The 2017 list highlights 11 once-endangered sites, including Utah’s Nine Mile Canyon, that are now thriving and contributing to their communities—while also focusing attention on the extraordinary efforts undertaken to bring them back from the brink. Nine Mile Canyon appeared on the 11 Most Endangered list in 2004.

“Often called ‘the world’s longest art gallery,’ Nine Mile Canyon contains thousands of images carved onto canyon walls by Native Americans, helping to tell the story of people in North America centuries before the arrival of the First Europeans,” said Stephanie Meeks, president and CEO of the National Trust for Historic Preservation. “The irreplaceable rock art paintings found in Nine Mile Canyon are now better protected and more accessible to visitors—ensuring that these important cultural resources will endure for the benefit of future generations.”

Nine Mile Canyon contains thousands of ancient petroglyphs, pictographs, rock shelters, granaries and other cultural resources attributed to the Archaic, Fremont and Ute people who inhabited Nine Mile Canyon starting over 1700 years ago. The Canyon is said to contain the highest concentration of monochromatic prehistoric rock art in North America.In addition to these irreplaceable Native American resources, the Canyon also contains many historic sites – including stagecoach stations, settlers’ cabins, ranches, and iron telegraph poles installed by the famed 19th-century Buffalo Soldiers – that stand as reminders of the area’s pioneer history.

Though it faced a range of threats from recreation and energy development, when it was named to the 11 Most list the most direct threat to Nine Mile Canyon’s cultural resources was the increase in heavy truck traffic rumbling through the Canyon on a daily basis. In addition to kicking up clouds of dust, the beautiful rock-art images were being damaged by a chemical dust-suppressant that directly impacted the Canyon’s ancient pictographs and petroglyphs.

A years-long collaboration led to the paving of the road through the Canyon, successfully resolving the most pressing threat to its cultural resources and, by making it easier to access Nine Mile Canyon, increasing visitorship and raising public awareness of this special place. Preservation is an ongoing effort and some challenges remain at Nine Mile Canyon. The Trust and its partner, the Nine Mile Canyon Coalition remain committed to working towards a sustainable balance between increased tourism, energy development and cultural-resource protection at Nine Mile Canyon.

Members of the public are invited to learn more about this year’s 11 Most list and what they can do to support hundreds of sites that remain endangered at SavingPlaces.org/11Most

The 2017 list of America's 11 Most Success Stories (in alphabetical order):

• Angel Island Immigration Station – San Francisco, Calif. A point of entry to the U.S. for immigrants from eighty countries across the Pacific Rim between 1910 and 1940, but abandoned since World War II, the remaining buildings of the Immigration Station were scheduled to be torn down until park ranger Alexander Weiss re-discovered writings on the walls, inaugurating a long-term grassroots preservation effort. Listed in 1999, the now restored poems carved into its walls by Chinese detainees illustrate these immigrants’ stories and serve as a stirring reminder of the challenges they overcame.
• Antietam National Battlefield – Sharpsburg, Md. One of the most significant events in American history, the Battle of Antietam influenced the outcome of the Civil War and immediately led President Abraham Lincoln to issue the Emancipation Proclamation. First listed in 1988 in response to a flawed proposal to construct a shopping center and other buildings on battlefield land, the listing helped to galvanize support and action by local, state and federal agencies and non-profit organizations, resulting in a true preservation success story.
• Cathedral of St. Vibiana – Los Angeles, Calif. Opened in 1876 following five years of construction, the Cathedral endured until 1995, when the Roman Catholic Archdiocese of Los Angeles began to move ahead with plans to demolish it. Listed in 1997, the ultimately successful fight to save the then-Cathedral of St. Vibiana was a defining moment for Los Angeles preservationists.
• Governors Island – New York, NY. Once the nation’s oldest continuously used military post, Governors Island played roles in several eras of American history until 1995, when the military left and the Island faced an uncertain future. Listed in 1998, Governors Island has been transformed from an underused historic property into an active and indelible community resource that is loved by native New Yorkers and visitors alike.
• Historic Boston Theaters – Boston, Mass. Once lavish palaces, the Boston Opera House, Paramount Theatre and Modern Theater had fallen into disrepair when they were listed in 1995. The listing led to the late Mayor Thomas Menino and city agencies to develop a network of partnerships to rehabilitate the theaters and revitalize the surrounding neighborhood, resulting in a key preservation success story for the city
• Little Rock Central High School – Little Rock, Ark. When listed in 1996, the school that had been at the center of the nation’s school desegregation debate was suffering from deterioration. Still in operation as a public high school, it has also been established by Congress as the Little Rock Central High School National Historic Site that teaches visitors about our nation’s ongoing struggle to achieve civil rights for all.
• Nine Mile Canyon – Utah. The ‘world’s longest art gallery’ contains thousands of ancient Native American cultural resources. When listed in 2004, truck-traffic, dust and chemical dust-suppressant were damaging these irreplaceable treasures. Paving the Canyon road has alleviated this threat, and also made its vast cultural resources more accessible to visitors.
• Penn School – Frogmore, S.C. Founded in 1862, the Penn School was one of the first schools in the South for freed slaves, operating until the post-World War II years when many students left and the school eventually closed and was deteriorating. After being named to the 11 Most list in 1990, several campus buildings have been restored and the renamed Penn Center has become a leader in cultural preservation that President Obama recognized in 2017 as part of the Reconstruction Era National Monument
• President Lincoln’s Cottage at the Soldiers’ Home – Washington, D.C. Since being named to the List in 2000, President Lincoln’s Cottage has transformed from a threatened site to one of the most visited, revered and vibrant places in Washington that serves as a gathering place for discussion, education and reconciliation.
• Statler Hilton Hotel – Dallas, Texas. A Modernist crown jewel and center of community life in Dallas for decades, when listed in 2008 the Statler had fallen into disrepair and faced calls for its demolition. Now set to reopen, the stunning transformation of the Statler Hilton is a poster child for the power of the historic tax credit and a significant example of the ways that older and historic buildings can contribute to the vibrancy of their communities
• Travelers’ Rest – Travelers’ Rest, Mont. The only place where archaeological evidence of a Lewis and Clark encampment can be found, the site’s integrity was threatened by development. The 1999 11 Most listing helped spur action to protect the landscape as a state park.

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America’s 11 Most Endangered Historic Places has identified nearly 300 threatened one-of-a-kind historic treasures since 1988. Whether these sites are urban districts or rural landscapes, Native American landmarks or 20th-century sports arenas, entire communities or single buildings, the list spotlights historic places across America that are threatened by neglect, insufficient funds, inappropriate development or insensitive public policy. The designation has been a powerful tool for raising awareness and rallying resources to save endangered sites from every region of the country. At times, that attention has garnered public support to quickly rescue a treasured landmark; while in other instances, it has been the impetus of a long battle to save an important piece of our history.