This is not your grandfather’s Lego. But perhaps your father still plays with the delightful little bricks. Lego is not entirely what it used to be, a toy for the imaginative creativity of children, rather than the imitative capacity of adults.

Jan. 28 is International Lego Day. Yes, there are international days for everything; Lego’s is designated to mark the date in 1958 when the patent application for Lego was submitted to the Danish Directorate for Patents and Trademarks — at 1:58 p.m. to be exact. The original is kept at the Lego House museum in Billund, Denmark. Yes, there is a museum preserving the history of Lego.