With over 891 pieces, You assemble this amazing puzzle of Westeros & Essos. The first layer puzzle is a generic jigsaw of the two famous continents. The second foam layer puzzle you assemble the famous introduction of the Hbo TV series. The third layer you add 3D Miniature models of cities and castles which is a complete miniature Model of the world of game of Thrones! What is the 4th dimension? The 4th dimension is time, located on the third layer of the puzzle. You refer to the time poster to locate and place each building on the map according to the year It was built. As you work your way through the time poster you are placing each building in chronological order as if history is happening before you eyes!