Billund

From Brickipedia, the LEGO Wiki.

Billund is a company town, the home of the LEGO Group headquarters. There is a LEGO factory on the outskirts of town which as of 2005 manufactures 90% of the company's products, though the effects of globalization and competition from companies such as Mega Bloks is likely to lead to more off-shore manufacturing. Across the road from the company's headquarters is the first of the theme parks, the LEGOLAND Billund built in 1968.

Billund Airport, Denmark's second busiest airport, was built by the Lego Group in the 1960s, though it is now independently run.

More infos at Wikipedia.