Which state has the most national monuments?

National monuments are located in 31 states as well as in the District of Columbia, the Virgin Islands, American Samoa, the Minor Outlying Islands, and the Northern Mariana Islands. Arizona, with 18, has the largest number of national monuments, followed by California with 17 and New Mexico with 14. read more

The state of New York has the highest number of landmarks by a wide margin (263 in the entire state compared to 187, 166, and 142 in the runners-up Massachusetts, Pennsylvania, and California). read more

National monuments in the National Park System. The National Park Service manages or co-manages three-quarters of the extant national monuments, which is a far larger share than any other federal agency. 55. National monuments created primarily to preserve natural resources such as geologic, marine, and volcanic sites. 27. States with national monuments. read more

The state of New York has the highest number of landmarks by a wide margin (263 in the entire state compared to 187, 166, and 142 in the runners-up Massachusetts, Pennsylvania, and California). Not only that, but New York City has more landmarks than any other U.S. city (110) and more landmarks within the city limits than 45 of the U.S. States each have on their own. read more

Historically, some national monuments were managed by the War Department. National monuments can be so designated through the power of the Antiquities Act of 1906. President Theodore Roosevelt used the act to declare Devils Tower in Wyoming as the first U.S. national monument. read more