4

Niagara Falls

4

The Space Needle

4

Maddy's Massachusetts Diary

4

Gateway Arch

4

Hoover Dam

4

The Statue of Liberty

4

The White House

4

U.S.S. Arizona Memorial at Pearl Harbor

4

The Mississippi River

4

Yellowstone National Park

4

The Golden Gate Bridge

4

Mount Rushmore

4

Washington Monument

4

The Willis Tower

4

Grand Canyon