There are a lot of National Parks and Monuments in the US. I am unsure of the number. Five Monuments were added this year.
I will cover National Forests at another time.
National Parks are taken care of by the National Park Service. The Rangers are highly skilled, talented, hard working and the best looking people in the world.
If you get a chance, go to a National Park and look around. You will not be disappointed.
I will label the pictures from Wikimedia Commons as WC. Those pictures from the National Park Service I will label as NPS. This is because I am lazy.
Capitol Reef in the state of Utah by, Bigtimepeace, WC.