4

Brandenburg Gate, Germany

4

Chip's Tips on Rwanda

3

Florence Nightingale

3

Ludwig van Beethoven

4

Chip's Tips on Switzerland

3

Anne Frank

2

Country Flags of Europe

3

Meteorites, Meteoroids, and Meteors

3

May Day

3

Hanukkah

4

U.S.S. Arizona Memorial at Pearl Harbor

3

Martin Luther

3

Pablo Picasso

3

Heat and Temperature

3

Rivers of the World