The Big Book of LEGO Facts is a reference book published by Dorling Kindersley in 2023. It presents a broad compilation of information about LEGO history, elements, themes, and production processes. The book includes sections on brick design, mold development, minifigure evolution, and notable models created across multiple decades. Its layout follows the DK visual encyclopedia style, using photographs, diagrams, and short text entries to organize facts. Coverage spans early wooden toys, the introduction of the modern brick, system growth through the twentieth century, and selected large scale or record setting constructions from recent years.