Imagine how echo-ey it is in here. For scale, dig those doorways on the bottom right and bottom left of the photo.

Now imagine letting loose with a giant sneeze right in the middle of the room. I already thought sneezes were enjoyable, but I've never experienced one in as massive an echo chamber as this. I think my sneeze lasted about 23 seconds by the time it disappeared into the nether realms of the building where only ghosties and stray echos are kept.
This is Union Station in Kansas City and boy is it huge. I mean HUGE! Imagine if airport terminals looked like this. Why, it would almost make waiting for your overdue flight a joy. I dare say that it would . . . if you could sneeze every once in a while.