Akua blinked a few times, before her head tipped. "I don't know what those are," she said, but clarified after a brief moment. "Well, I know what armories and training yards are. We do have those scattered about the seat, where the Legionary trains."

But they are tucked away, really. Places out of the way as to not disturb the populace, efficient use of space to tuck away on an island where there was only so much.

"It is power of a different sort than you are used to, I think. This is the power that is used to craft great works. To bring our worlds back, it will require an incredible amount of sacrifice, and power can always circumvent sacrifice."

So. It's difficult to equate, since high tech world vs. low tech, but Manabu can probably put together that she is talking about magic.