Did you know that ORD actually stands for orchard? O�Hare International Airport was actually an apple orchard before becoming one of the world�s busiest airports. Every flight number and date on the tag have special meaning to the airport, it�s city or country. Safe travels as you discover these secrets and many other things in this 24�x 30� 1000 piece puzzle. By artist OW Lawrence. This premium puzzle is a little slice of Americana as Chicago itself is one of the countries treasured cities and individuals go in and out of this famous airport. This puzzle is great for an individual to enjoy their free time or a great family activity.