I'm still getting to know this funny little city as a grown-up, and I think we should compile a list of weird and random facts that would be hard to glean from a guidebook or history book.
I will start with a most useful piece of knowledge I learned today:
The post office at the airport is open 24 hours a day, 7 days a week. Need something mailed at 4 in the morning? Airport. Need something postmarked on a date that falls on Sunday? Airport. Oh how I love knowing things that allow me to procrastinate as much as I possibly can.