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The National Building Museum is launching its completely FREE hands-on festival, inviting creative minds of all ages to build, discover, play, make, and design. Taking over the historic Great Hall, this immersive design sandbox pairs you directly with professional architects, hobbyists, artisans, and master craftspeople for an entire day of collaborative creation. Step past the standard museum exhibits to build giant architectural structures, test out traditional building materials, and unlock the exact blueprints behind the world we design and build.