Story highlights

The 2015 list includes spots affected by natural resource extraction

Urbanization may be squeezing out some historic spots

Other sites are important to the nation's immigrant, LGBT and civil rights movements

CNN  — 

The Grand Canyon, a “war room” of the civil rights movement, the Factory gay disco and Miami’s Little Havana have all 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.

“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.”

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.

Here are the 11 most endangered places for 2015 (in alphabetical order):

1. A.G. Gaston Motel, Birmingham, Alabama

2. Carrollton Courthouse, New Orleans

3. Chautauqua Amphitheater, Chautauqua, New York

4. East Point Historic Civic Block, East Point, Georgia

5. Fort Worth Stockyards, Fort Worth, Texas

6. The Grand Canyon, Arizona

7. Little Havana, Miami

8. Oak Flat, Superior, Arizona

9. Old U.S. Mint, San Francisco

10. South Street Seaport, New York

11. The Factory, West Hollywood, California