Engineering the ultimate LEGO experience

Most people will remember letting their creativity run wild with the small, colourful LEGO bricks as a child.

Now the childlike joy has been scaled up a notch with the construction of the 12,000 m² LEGO House in Billund, which is designed to resemble 21 LEGO bricks stacked on top of each other.
The experience house is filled with 25 million LEGO bricks and the colourful, playful design, which appears to defy gravity, embodies the LEGO philosophy that learning through play promotes innovation and creativity.

BIG was the architect behind bringing the classic LEGO brick to architectural scale, and COWI delivered consulting engineering from an early stage and all throughout the project. This included an environmental impact analysis, assisting on a new local plan, assessing the design proposals, creating a framework for the construction design and supervising key areas such as sustainability, energy and fire and security engineering.

Due to the unique design, COWI was also responsible for a 4D model of the building to assist the contractor with understanding the complexity of the building and how it had to be constructed.

The playful landmark was inaugurated in September 2017 and was given the 'Building of the Year' award in in Denmark in December 2017.



2013 - 2017

LEGO House


  • Design
  • Environmental impact analysis
  • Sustainability
  • Assisting on new local plan
  • Installations
  • Supervision
  • Fire and security

Get in contact

Jan Bro Nielsen

Jan Bro Nielsen
Chief Project Manager
Buildings, Denmark

Tel: +45 56401785