Really very simple. It took me a check-over or three to make sure it actually was as silly as it seemed

World Map Location: Crimson Caravan
Local Map Location: The barracks (SE I think?)

The building from the outside is like this (If looking at it coming from the top of the screen. (the bend goes to the left)
EDIT
(my little ascii graphics didn't work. so just picture it as
L

The inside, instead of turning to the left to leave... you go to the right...

Someone got their directions mixed up!

Whatever you do, don't go near Bravil...

But yeah... it's because there are two different people for modeling interior and exterior meshes, and sometimes they don't have the time to get them all right, so have to generalize things as much as they can.