Released in 2020 as a promotional set, the LEGO Trains 40th Anniversary Set celebrates four decades of LEGO train sets with a compact 188-piece build. The set pays tribute to the history of LEGO trains by featuring classic designs that reference iconic locomotives from the product line's past. It was offered for free as a limited promotional item, making it a sought-after collectible for train enthusiasts and longtime LEGO fans alike.
