Lego sets in a toy store

Lego bricks are one of most celebrated toys in history. The interlocking plastic toy blocks were introduced by Danish company Lego in 1949. In 1958 the brick design was perfected. Company engineers have spent five years trying to find the perfect material. After they picked the material (ABS plastic) and the basic design, it never changed again. You can take Lego blocks from 1960s, pick a new set in a