1891 .birth of Ole Kirk Christiansen, future founder of the LEGO Group.

1895 .foundation of "Billund Woodworking & Carpenter's Shop" a small carpentry shop in Billund, southern Denmark, which eventually evolved into the founding of the LEGO company.

1924 .destruction, in a fire, of the Ole Kirk carpentry shop. Flames started on some wooden planks in the store. Ole Kirk builds larger premises, rents most of the space and uses the rest as a workshop.

1920 .birth of Godtfred Kirk Christiansen.

1934 .Establishment of the name "LEGO" for the new company and its products, by Ole Kirk, from the Danish phrase "leg godt", meaning "play well". Coincidentally, the word "lego" also means "I together" in Latin. At that time the company had 6 to 7 employees and for years the founder's motto adorned a wall in the carpentry shop: "Only the best is good enough."

1935 .creation of the LEGO wood duck.

1936 .The company's price book had 49 items. The most expensive was a freight train car priced at DKK 36 a dozen.

1937 .Model creation begins by Godtfred Kirk Christiansen.

1939 .company growth to ten employees.

1943 .company growth to around forty employees.

1944 .The company was converted into a family limited liability company under the name "Legetojsfabrikken LEGO Billund A/S".

1947 .December 27 – Birth of Kjeld Kirk Kristiansen.
acquisition by the company of the country's first plastic injection machine at a cost of around DKK 30,000; beginning of the manufacture of plastic toys.
the Christiansens are inspired by samples of the "Kiddicraft Self-Locking Building Brick", plastic snap blocks patented by Hilary Harry Fisher Page in the UK.

1949 .production by the company of around two hundred different items in plastic and wood, including plastic blocks similar to Kiddicraft, under the name of "Automatic Binding Bricks". These products were only marketed in Denmark. The factory had a total area of ​​2,300 square meters and had about fifty employees.

1951 .production of the first film about LEGO blocks. The photographer is Chistian Lund, and the film is in black and white, with no sound.production of the first film about LEGO blocks. The photographer is Chistian Lund, and the film is in black and white, with no sound.

1952 .company growth to around 140 employees.

1953 .launch of the first "baseplate".
"Automatic Binding Bricks" are renamed "LEGO Mursten" ("LEGO blocks" or "bricks").

1954 .May 1st: official registration of the word "LEGO" in Denmark.
Godtfred Kirk becomes the company's Junior General Manager, and comes up with the idea of ​​turning LEGO blocks into a toy system.
launch of the first LEGO beams.
launch of the LEGO door and window elements.

1955 .Godtfred Kirk demonstrates the "LEGO System of Play" at a fair in Nuremberg, Germany.
launch of the first LEGO trees.
launch of the "LEGO System of Play", which featured twenty-eight sets and eight vehicles. Separate elements were also sold.
company's first export (plastic products and the "LEGO System of Play") to Sweden.

1956 .foundation of the first company abroad, for the distribution and sale of LEGO products in Hohenwestedt, Germany.

1957 .the company celebrates its Silver Jubilee.
appointment of Godtfred Kirk as Managing Director of LEGO.launch of the first LEGO flags and lights; new design of windows.

1958 .company growth in Billund to one hundred and forty employees.
death of Ole Kirk; Godtfred Kirk inherits the leadership of the LEGO Company.
start of mold production in Germany.
launching of building blocks for roofs ("slope bricks").
improved LEGO block design to allow for greater versatility and better fit.
patent for the stud-and-tube fitting system (pins and tubes). This new system allows the construction of structurally more stable models.

1959 .set up a small team in charge of developing ideas for new sets: the "Futura" division.
foundation of LEGO France, British LEGO Ltd., LEGO Belgium and LEGO Sweden.
start of marketing LEGO products in Europe: Norway, Germany, Switzerland and Great Britain.