I’m a Lego nut. I started building with Legos when my son turned 7, and I never stopped. My office is filled with displays that include vehicles, buildings and scenes from “Star Wars” and “Harry Potter.”

Do you know the history behind the building toy so popular that it was named Toy of the Century by Fortune magazine in 2000?

Legos were invented by a Danish carpenter-turned-toymaker named Ole Kirk Christiansen. The company began in 1932, but the bricks that are used today weren’t created until 1958. The name Lego comes from the Danish phrase “leg godt,” which means “play well.”

The factories that make Legos operate 24 hours a day and are almost completely automated. The process begins when colored plastic granules are suctioned through tubes and sent to molding machines.

The plastic is heated to 450 degrees. The softened plastic is forced into molds using 25 to 150 tons of pressure. The plastic cools in less than 10 seconds and is then ejected into large bins. Up to 2 million Lego pieces are made every hour. That’s about 33,000 per minute!

Christiansen insisted on making the highest-quality toys possible, which explains why Legos fit together so perfectly. Each Lego mold is accurate to within two-thousandths of a millimeter. For every million Legos made, only 18 are rejected because they didn’t meet the high standards set by the company.

In my opinion, the most amazing Lego sculptor is Nathan Sawaya. His work proves that Legos can be used to make art (brickartist.com).

Here are some additional cool facts about Legos.

*Lego makes about 22 billion pieces every year. More than 300 million of those are rubber tires for toy vehicles. That makes Lego one of the largest tire manufacturers in the world.

*Some estimates say that children spend 5 billion hours a year playing with Legos.

*The tallest Lego tower on record was made in Wilmington, Del., in August. It was 112 feet 11.75 inches tall.

*Lego has 140 designers who create new products for their eager customers. The designers travel all over the world to find out what’s new and interesting to kids.

*Legos are made from the same plastic that’s used to make hard hats.