Let's all take a moment to lament that what I'm about to share is currently specific to the Korean version of TERA. There. Now that that's out of our system, we can appreciate the fact that Bluehole's new guild sky fortresses are pretty dang impressive, even if we won't see them in the En Masse version of the game for a while.
MMO Culture reports that TERA Korea is also removing side quests from the fantasy MMO's quest log and placing them in a new interface nugget called Scouting Command, ostensibly to allow for more focus on the game's main story. But you really wanted to see the guild fortresses, right? Click past the cut for the vid.