Ever dreamed of add-on architecture? Here’s your chance to make it a reality, with the Polyhedron Habitable by Manuel Villa. Villa, a Colombian architect, has created a miniature house with highly rigorous geometric shapes. He especially designed it for parents and children, as a space which would give them the opportunity to spend some quality time together. One might think that such precise lines and shapes would produce a cold, neutral design, apt for anything but closeness and intimacy. That could not be further from the truth. According to the project description, “the outcome is a Regular Polyhedron –a “Truncated Cubic-octahedron”– transformed into a inhabitable space; a self-standing volume with one of his faces opened to the surroundings, and little windows on the sides and at the top that supply day light and optimal air circulation conditions.” We would simply love to have this in the backyard, as a playhouse or even a tree house of sorts; how about you?