4
Hoover Dam
4
The Space Needle
4
Niagara Falls
4
Mount Rushmore
4
Washington Monument
4
Grand Canyon
4
The Willis Tower
4
Landmarks of the United States
4
The Statue of Liberty
3
A Capitol Dream
4
The Golden Gate Bridge
2
US Landmarks
4
U.S.S. Arizona Memorial at Pearl Harbor
4
The White House
4
Gateway Arch