Senior Editor Amazon has submitted its proposed development plans for the second phase of new construction for its Arlington headquarters. You’ve probably heard of the Spheres — part of the Amazon headquarters complex in Seattle. Now get ready for the Helix, a stunning new structure that leaves a dramatic effect on the skyline of Arlington, Virginia. “If you’ve visited Amazon’s Seattle headquarters, you may already be acquainted with The Spheres, a special place where employees can work or unwind while immersed in nature,” the company said in a blog post. “The Spheres were inspired by a concept called biophilia — the innate human desire to connect with nature — and a similarly engaging and rejuvenating concept is the basis for our Arlington headquarters: a double helix.”