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GRAND CANYON NATIONAL PARK, Ariz. — The Grand Canyon, a “war room” of the civil rights movement, the Factory gay disco and Miami’s Little Havana have been named “endangered” by the National Trust for Historic Preservation.

The trust’s 28th annual list of America’s 11 most endangered historic places highlights some of the nation’s most important natural, cultural and architectural places and structures at risk of destruction due to neglect, development or other causes.

The trust said the Grand Canyon is at risk of destruction and irreparable damage. It cites development pressures from tourism and mining.

“This year’s list is our most diverse ever, and reflects our commitment to recognizing and preserving all the facets of our diverse history,” said Stephanie Meeks, president and CEO of the nonprofit trust.

“From the LGBTQ history of the Factory in California to the Cuban-American heritage of Miami’s Little Havana to the civil rights legacy of the A.G. Gaston Motel in Birmingham, these sites tell American stories that have been overlooked for too long.”

More than 260 significant sites have been listed as endangered since the list was launched in 1988, and just 12 sites have been lost through 2014, Meeks said.

“The list is a great tool for shining a spotlight on places of significant architecture or historical importance,” she said.

Though nominations can come from anyone, Meeks said it helps if nominees have local organizations able to use the national spotlight to explain the value of their sites. Trust employees pick the final list, looking for national significance, the urgency of the threat and the likelihood of success in preserving the site.

The National Trust for Historic Preservation has an annual list of the most endangered historic places. This year, it listed 11:

*A.G. Gaston Motel, Birmingham, Ala.

*Carrollton Courthouse, New Orleans

*Chautauqua Amphitheater, Chautauqua, N.Y.

*East Point Historic Civic Block, East Point, Ga.

*Fort Worth Stockyards, Fort Worth, Texas

*Grand Canyon National Park, Ariz.

*Little Havana, Miami

*Oak Flat, Superior, Ariz.

*Old U.S. Mint, San Francisco

*South Street Seaport, New York

*The Factory, West Hollywood, Calif.