The former Saguaro National Monument, now Saguaro National Park, is located in Arizona, just outside Tucson.
The state that Homestead National Monument is in is Nebraska.
'State monument' or 'National monument' may be English equivalents of 'Rijksmonument'.
colorado
Wyoming
Utah.
Utah.
Arizona USA
Pennysylvania is a state.
Utah
Colorado National Monument - Fruita, CO Dinosaur National Monument - Vernal, Utah & Dinosaur, Colorado, CO,UT Florissant Fossil Beds National Monument - Florissant, CO Hovenweep National Monument - Blanding, Utah & Cortez, Colorado, CO,UT Yucca House National Monument - Cortez, CO
in san diego california
Colorado.