The National Trust for Historic Preservation is leading the movement to save places where our history happened.

Old places are where our lives, memories, and stories began. They connect us to the past, anchor us to the present, and lead us into the future. These places inspire us to create a stronger nation, because they belong to all of us.

For 70 years, the National Trust for Historic Preservation has led the movement to save America’s historic places. A privately funded nonprofit organization, we work to save America's historic sites; tell the full American story; build stronger communities; and invest in preservation's future.

Thanks to the passion and dedication of our advocates and supporters, we’re able to protect hundreds of places every year. Help us save places that matter—for ourselves, each other, and our future together.

Learn more about how we're saving places on

We are now accepting Letters of Intent (LOIs) for the 2024 list of America's 11 Most Endangered Historic Places.  Deadline for submissions has been extended to Wednesday, October 4, at 11:00 p.m. Eastern Standard Time. A Letter of Intent (LOI) is similar to a mini-application, letting the National Trust know that you would like to nominate your site as one of America’s 11 Most Endangered Historic Places.

   The National Trust will review all submitted LOIs and will invite select applicants to submit a full nomination in November 2023. The 2024 list of America’s 11 Most Endangered Historic Places will be announced in May 2024. For information on how we evaluate applications, please visit our Frequently Asked Questions.

   Since 1988, the National Trust has used its list of America's 11 Most Endangered Historic Places to raise awareness about the threats facing some of our nation's greatest treasures. The list, which has identified more than 350 sites to date, has been so successful in galvanizing preservation efforts that less than five percent of these sites have been lost.

   As part of the National Trust’s continued commitment to telling the full American story, we particularly invite nominations for historic places that highlight a unique or overlooked aspect of American history and that expand our understanding of our shared national heritage. To that end, we welcome nominations of historic places important to communities who are historically underrepresented within preservation, including, but not limited to, historic places associated with women, immigrants, Asian Americans, Black Americans, Latine Americans, Native Americans, Native Hawaiians, Pacific Islanders, and LGBTQIA communities.

   For more information, visit

   For technical assistance with the application form, please visit

   For any other questions regarding the 11 Most Endangered list, please contact

National Trust for Historic Preservation