No, the world's oldest tree is in Inyo National Forest, near Sequoia Nat Park.
It isn't a monument, but a national park. A monument is something made by man, but the Grand Canyon is natural by nature.
On Concorde place, the oldest monument of Paris: Obelisk of Luxor 3300 years old.
A very cool riddle. It's the San Francisco trolley cars. Isn't that cool?
Wake Forest
The Cadet Monument
So far as I know, the oldest monument (if by "New World" you mean the US) is a school house in St Augustine, Florida.
Qutub minar is the smalest monument in india true or false
les Thermes de Cluny
black forest
Place de la concorde obelisk
dome of the rock