Preparation

For housing, we chose Airbnb.
For transportation, we booked the flight tickets from AUS to ORD and planned to buy Chicago Ventra Cards to take the bus and trains.
For must-do list in Chicago, we bought Chicago CityPASS to visit the 5 attractions the citypass includes.

Arrival

Arriving O'Hare International Airport at around 10:00 am, I started to explore everything in such a large airport, as well as looking for the dinosaur hiding in a secrete terminal; while I failed to find out...

To be continued...