The assignment for this year's White House holiday display came with a tight deadline. A team of Lego master builders, within 2 1/2 weeks, had to create 56 unique gingerbread houses out of the toy bricks, one for each state and United States territory.

For this group, it was child's play. The seven masters at the US headquarters of Lego Systems in Enfield, Connecticut, had them designed, built from more than 200,000 Lego pieces and in a van to Washington in time for the unveiling.

"We had an all-hands-on-deck kind of thing," said Paul Chrzan, one of the master builders. "We basically gave ourselves a day for each house. And we just built like crazy."

The team prides itself on building just about anything out of Lego bricks, including, among other recent projects, scenes for The Lego Movie, a replica of Rio de Janeiro for the Olympics, and a life-size statue of Boston Red Sox slugger David Ortiz.

Promoted to the highest ranks for their skills, the master builders fulfill a marketing role for the Denmark-based company, but also see themselves as inspiring young builders.

The team of seven - including a former pastry chef, a retail worker and an actor - works in the model shop, a building down a slight hill from the administrative offices that features a Lego Christmas wreath on the walls, designers at computers and the sounds of builders tinkering with the latest structures.

Some, like Chrzan, 55, had a Lego affinity from childhood, when his Danish mother was among the first in his neighborhood to buy the sets. Others did not play with Lego as much as kids but studied sculpture or fine arts in school. All see the toy brick as a medium for artistic expression.

Master builder Pete Donner got his start as a model gluer out of high school in 1997. As a child, he said he was awful at building Lego sets, preferring to set aside the instructions. He said that helped him win the job he has now.

"For each one of us it's a unique journey," he said. "The secret to my success is I drew a lot and I built a lot."

"I have access to the biggest Lego collection in the world," he said. "Why wouldn't I utilize that?"