Educational toy made in plastic versions. In the mid-1950s, more explicitly engineering-themed construction toys appeared, including plastic girders, columns, and panels that could be assembled into a model curtain wall skyscraper. Later, this Girder and Panel structural system was extended to a Hydro-Dynamic setup by adding pipes, valves, tanks, nozzles, and pumps to allow construction of model plumbing, HVAC, and chemical engineering systems like a simulated distillation column. Other extensions of the system supported suburban-style housing developments (Build-A-Home), or monorail transportation systems (Skyrail). The building toy Lego was originally developed by Ole Kirk Christiansen in Billund, Denmark, in the 1930s. The name
The Lego Group The Lego Group Lego System A/S, doing business as The Lego Group (stylised as The LEGO Group), is a Danish toy production company based in Billund. It is best known for the manufacture of Lego-brand toys, consisting mostly of interlocking plastic bricks. The Lego Group has also built several amusement parks around the world, each known as Legoland, and operates numerous retail stores. The company was founded on 10 August 1932 by Ole Kirk Christiansen. The word "lego" is derived from the Danish words "leg godt", meaning "play well". In the first half of 2015, The Lego Group became the