The LEGO 10261 Roller Coaster set is a highly sought-after and retired product featuring 4124 pieces. This set, part of the LEGO Creator theme, allows adults aged 16 and up to build a thrilling roller coaster with intricate details such as a Cool Customer, Cotton Candy Vendor, and Queasy Rider. With its large size of 23.62 inches in length, 20.32 inches in height, and 15.59 inches in width, this set is perfect for those with a passion for building and creating unique structures. The set also comes in a new, sealed box from a US seller, making it a valuable addition to any LEGO collection.