4

Yellowstone National Park

3

Fjords of the World

4

Maddy's Montana Diary

3

Canyons of the World

4

Table Mountain, South Africa

4

Maddy's California Diary

4

Maddy's Kentucky Diary

4

Maddy's Alaska Diary

4

Serengeti, Tanzania

4

Maddy's Maine Diary

4

Mount Rushmore

3

Sinkholes of the World

4

Chip's Tips on Kenya

4

Mount Fuji, Japan

4

Grand Canyon

4

Maddy's Pennsylvania Diary

4

Chip's Tips on Honduras

3

Valleys of the World

4

Maddy's Utah Diary

3

Wetlands of the World

4

Maddy's Idaho Diary

4

Maddy's Virginia Diary

4

Maddy's North Carolina Diary

4

Maddy's Texas Diary

4

Maddy's Oregon Diary

4

Sossusvlei Dunes, Namibia

4

Maddy's Colorado Diary

4

Maddy's Washington Diary

4

Chip's Tips on Chile

4

Maddy's South Dakota Diary