4

Chip's Tips on Switzerland

2

Country Flags of Europe

3

Straits of the World

3

Leonardo da Vinci

3

Napoleon Bonaparte

4

Chip's Tips on Malta

3

Florence Nightingale

3

Caves of the World

3

Marco Polo

4

Things to See in New York City

4

Chip's Tips on Greece

4

How they work? Ships

3

Cuisines of the World

3

Christopher Columbus

3

Easter

4

U.S.S. Arizona Memorial at Pearl Harbor