The Haven

From ROI Wiki

The Haven is a large, heavily armed, autonomous battlestation located in a pocket dimension within subspace that is powered by a captured singularity and was used by the Razkor as a last ditch defensive location whenever their people came under attack and were in risk of being destroyed. The haven was eventually abandoned shortly after the fall of the Razkor, and later rediscovered by Phillip Augustus and used to attack the other races of the galaxy. It was eventually destroyed in The Battle of the Haven, forever erasing it from the galaxy.