On my way to Georgia, I had a layover in Washington (IAD) and it's a really strange airport. You can't shake the feeling that you've landed at some kind of military facility—the terminals look like a jumble of barracks, everything seems thrown together in a rush. Though the airport was always a civilian one. Plus, you have to take shuttle buses to get between terminals. Very weird experience.

And I've flown Southwest more than once before, but I still can't get used to the fact that the airline doesn't assign seats to passengers. Your ticket has your boarding group number, and then you just pick any empty seat in the cabin. Somehow it works without any fights breaking out.