List of national monuments of the United States - Wikipedia
https://en.m.wikipedia.org/wiki/List_of_national_monuments_of_the_United_States
The United States has 133 protected areas known as national monuments. The president of the United States can establish a national monument by presidential proclamation, and the United States Congress can do so by legislation. The president's authority arises from the Antiquities Actof 1906, which allows the president to proclaim "historic landmarks, historic and prehistoric structures, and other objects of historic or scientific interest" as n…
DA: 59 PA: 81 MOZ Rank: 13