After defeating the Puppeteer, Urie went towards the place where the loud thud came whenever he defeated a creepy-looking clowns. He walked towards the Ferris wheel and past it, he saw that there's an enormous wall where a large circular hollow could be seen.
He looked around and saw that there's three pieces that seemed like they were attached to the hollow. From the place where he was standing, he could see that there's some images that were etched at each part.
There was a figure of a man swinging on a bar and that part seemed like the lower left part of the circle. He looked at another and saw that there was a figure of a man wearing a hat and a cape while holding a wand that was sparkling; the part seemed like the top center part of the circle. He turned his head at the last piece and saw that there's a figure of a man with strings attached to its hands that extended towards what seemed like small figures that were dancing.