Largest domino structure

What to remember

No fewer than 25,000 tiles: that was the size of the largest domino structure set up at Domino Day 2008 by Weijers Domino Productions.

A domino run works as a chain reaction. Once the first tile is knocked over, each one falls into the next in a cascade. When two or more players race to be the first to knock down all their own dominoes, it is called a domino rally; in front of an audience, it becomes a domino show.