The building toy Lego was originally developed by Ole Kirk Christiansen in Billund, Denmark, in the 1930s. The name Lego is said to be based on the Danish phrase "leg godt", or "play well", and is also translatable in Latin as "I study, I put together". By the 1950s, the sets were becoming available beyond Denmark and Germany, eventually being marketed worldwide and surpassing all previous construction toys in popularity. Lego bricks are versatile and are used by adults as well as children to make a near-limitless variety of creations. The company has created a line of kits for complex architectural structures such as the Taj Mahal. It has also partnered widely to create theme-based kits for franchises such as Star Wars.