A National Historic Landmark (NHL) is generally a building, district, object, site, or structure, that is officially recognized by the United States government for its national historical significance. A National Historic Landmark District (NHLD) is a historic district that is recognized as an NHL. read more
If you want to visit the highest number of National Historical Landmarks in the United States while doing the least amount of traveling, then you’d better put yourself in a New York state of mind. 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 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