ORD has been in existence since 1942, when it was a manufacturing plant for Douglas C-54s during WWII and was located near a small farming community named Orchard Place. In 1945, the airport took the name Orchard Field Airport and this is where the three-letter designation comes from: ORcharD.
In 1949, ORD was renamed O’Hare International Airport to honor Edward O’Hare, the U.S. Navy’s first flying ace. Unlike any other airport today, its designation has nothing to do with the current airport name or metropolitan area.
It lies 17 miles northwest of the Chicago Loop and in 2012 served 66.63 million passengers. There are four terminals with nine concourses that house 182 gates.
Until 2005, O’Hare was the world’s busiest airport in regards to takeoffs and landings. Its reign as busiest came to a halt when limits were imposed by the government which were intended to reduce flight delays.
On the seven runways, 39 airlines fly their planes to over 60 foreign destinations and numerous domestic ones. Currently, the number one destination overall from ORD is London, Heathrow and the number one domestic destination is LaGuardia in NY.
You will need to bring a pen, as the cache is small and does not have one.
Congrats to GeoChef74 on the FTF!