These 4D Cityscape Puzzles, listed at $39.99, are now $19 each at Groupon Goods. Plus, shipping is free. The best price we could find anywhere else is at least $29, depending on the city. These multi-layered puzzles feature streets, roads, railways, and more on a map, on top of which you place 3D buildings. There are 7 different puzzles available including Chicago (pictured), New York, Las Vegas, and more. Sales tax is charged in some states.