Where are LEGO parts made? Are all LEGO parts made in a single factory, or are there multiple factories? Where abouts is it/are they? If there are several, are there different factories for different pieces/sets, or do all factories produce all parts?
LEGO moulds bricks in the following plants: Billund in Denmark, Nyíregyháza in Hungary and Monterrey in Mexico.

In addition, it has another facility in Kladno, Czech Republic, that handles painting and packaging for some of the bricks produced in Denmark and Hungary.

The headquarters in Denmark is still where the most of R&amp;D and product development happens.