Matryoshka, or nesting dollars, are among the most popular of Russian souvenirs, even though they are a relatively recent art form. In the traditional nesting doll sets all of the dolls look almost identical to one another, and the number of dolls in the set ranges from 5 to 30. Learn more about at Russian Dolls-Words of the World.
For more Matryoshka fun, watch:
Dance of the Matryoshki
How Nesting Dolls are Made