1、Experts say coral reefs in the marine national monument, a conservation area, are in good shape.
2、Devils Tower, the first national monument in America, could almost be mistaken for the stump of an enormous tree.
3、Another place that holds special meaning for Native Americans is a national monument in the state of Iowa.
4、You could have crash landed on a future Earth ruled by apes and not even realize it until you discover a national monument.
