League Trade Center

Two million years ago, … served as a major trading hub for the member nations of the First League. Large portions of the …'s surface was covered in towering cities, and we have identified the ruins of at least twelve major spaceports in the northern hemisphere alone. The … was gradually abandoned over a period of several centuries, presumably as a result of shifting trade routes and the collapse of the First League.

The command below will trigger the "League Trade Center" event in Stellaris:

When this event fires, you can choose between the following option:

• Amazing.
  • Start special project: Trade Center