Printed Farms is is currently building a horse stable, a horse walker, and a manure shed that will cost a total of $3.3 million.Printed Farms Printed Farms is building and 3D printing a $3.3 million luxury horse barn, horse walker, and manure shed. When complete in August, the horse barn will be the world's largest 3D-printed building. This barn will house multimillion-dollar prized horses in the "Disney World for horses," Wellington, Florida. The next world's largest 3D-printed building isn't going to be a home, school, or office.