4

The Mississippi River

4

Chip's Tips on Chile

4

Maddy's Alaska Diary

4

Maddy's Nevada Diary

4

Grand Canyon

3

Fjords of the World

4

Maddy's Missouri Diary

4

Maddy's Montana Diary

4

Maddy's New York Diary

3

A Capitol Dream

4

Maddy's New Hampshire Diary

4

Maddy's Wisconsin Diary

4

Forbidden City, China

3

Helen Keller

4

Chip's Tips on Kenya

4

Edinburgh Castle, Edinburgh, Scotland

4

Chip's Tips on Gabon

4

Maddy's Virginia Diary

4

Maddy's Massachusetts Diary

4

Chip's Tips on Libya

4

Serengeti, Tanzania

4

Chip's Tips on Mauritius

3

Common Traffic Signs

3

Straits of the World

4

Yellowstone National Park

4

Mount Rushmore

4

Maddy's Indiana Diary

4

Chip's Tips on Yemen

4

Hadrian's Wall, England

4

Chip's Tips on Switzerland