How do you create a real building dedicated to toy blocks? By scaling them up. That's the idea behind the Lego House, an official Lego museum-meets-theme-park in Billund, Denmark, where the toy was invented.
Architecture firm Bjarke Ingels Group designed the 130,000-sq.-ft. structure, which opens Sept. 28, as a series of interlocking, Lego-like "blocks" that house play zones, restaurants, a store and a gallery of Lego masterpieces. Many spaces, including the rooftop terraces, will be open at no charge to the public.