4

Niagara Falls

4

Yellowstone National Park

4

The Willis Tower

4

Landmarks of the United States

4

The Space Needle

4

The Mississippi River

4

The Statue of Liberty

4

Gateway Arch

4

Grand Canyon

4

U.S.S. Arizona Memorial at Pearl Harbor

3

A Capitol Dream

4

The Golden Gate Bridge

4

Washington Monument

4

The White House

4

Mount Rushmore

4

Hoover Dam

2

US Landmarks