List of National Monuments of the United States

The United States has 122 secured territories known as national landmarks. The President of the United States can build up a national landmark by presidential announcement, and the United States Congress can by enactment. The Antiquities Act of 1906 approved the president to broadcast "noteworthy milestones, memorable and ancient structures, and different objects of notable or logical enthusiasm" as national monuments. Concerns about ensuring for the most part ancient Indian vestiges and relics—all in all termed artifacts—on western government lands provoked the enactment. Its motivation was to permit the president to rapidly save open area without sitting tight for enactment to go through an unconcerned Congress. A definitive objective was to ensure all noteworthy and ancient destinations on U.S. government lands.

President Theodore Roosevelt built up the primary national landmark, Devils Tower in Wyoming, on September 24, 1906. He set up eighteen national landmarks, albeit just nine still hold that designation. Sixteen presidents have made national landmarks since the project started; just Richard Nixon, Ronald Reagan, and George H. W. Shrub did not. Bill Clinton made nineteen and extended three others. Jimmy Carter ensured endless parts of Alaska, announcing fifteen national landmarks, some of which later were elevated to national parks. President Barack Obama has made or extended 24 national landmarks, the a large portion of any president, with more than 2 million sections of land of open area protected.

Thirty states have national landmarks, as do the District of Columbia, the Virgin Islands, American Samoa, the Minor Outlying Islands, and the Northern Mariana Islands. Arizona, with eighteen, has the biggest number of national landmarks, trailed by California with fifteen and New Mexico with fourteen. No less than sixty-four national landmarks secure spots of characteristic noteworthiness, including twelve topographical locales, seven marine destinations, and five volcanic destinations. Twenty-three national landmarks have real destinations connected with Native Americans. Thirty are other chronicled destinations, including twelve fortresses.

Numerous national landmarks are no more assigned in that capacity. Some were changed to national parks or another status by Congress or the President, while others were exchanged to state control or disbanded.