Dia Block This is the Crystal Castle. I believe this is a very rare item now. Since it's quite old, the blocks show signs of deterioration, and some parts are cracked. I displayed it assembled with a bag over it, but there is some dust. As shown in the images, I disassembled it and checked all the parts, and there were no missing pieces. I've included everything in the images, so I believe it's all there, but please be sure to check before purchasing to prevent any issues. The box and instruction manual are included, but the box is torn. Please consider them as extras. Search terms: Lego Block LEGO