Lego, officially trademarked LEGO, is a line of construction toys manufactured by the Lego Group, a privately held company based in Billund, Denmark. The company's flagship product, "Lego", have consisted of colorful interlocking plastic bricks and an accompanying array of gears, minifigures and various other parts. Lego bricks can be assembled and connected in many ways, to construct such objects as vehicles, buildings and even working robots. Anything constructed can then be taken apart again, and the pieces used to make other objects. Kits are sold which contain all necessary pieces for a particular project. Some hobbyists try to collect, buy, and sell various other pieces in different shapes and colors, to construct other hobbyist-created designs. The toys were originally designed in the 1940s in Europe and have achieved an international appeal, with an extensive subculture that supports Lego movies, games, competitions, and four Lego-themed amusement parks.