Quote Originally Posted by Keever View Post
The Castri throughout Eorzea are temporary constructions built in an extremely short time. Think like one of those flat-packed build-your-own houses. Airlift a few juggernauts of troops and engineers, and a container aircraft full of building parts into the heart of enemy territory, and suddenly you've got a well-defended military base in a strategic location for midnight raids and espionage. It's a key part of the strategy for Garlean expansion, and you can see how they used such techniques in Yanxia as well.
Azys Lla as well, most of it is still in big metal boxes however. naturally because when you get to that point in the MS they only just arrived a short time before you did, they just won't get updated due to it being unneeded.