Quote Originally Posted by Malakii View Post
Castrum respawns an hour after is been cleared or fresh instance. It keeps respawning. I have done two castrum's in the same instance.
However, it doesn't seem to respawn when it failed. Joined an instance where Castrum spawned but was abandoned fifteen minutes ago, did some skirmishes and CR to pass time.

For the next 100 minutes, Castrum did not respawn, but there were a lot of 10+.