List of gigastructures 2

All structures may only be built around a surveyed object that has no anomalies, no existing megastructures (gates are usually okay), and is not located in a crisis system.

A standard star refers to class A, B, F, G, K, M, or M Red Giant Stars.

"Planets" refer to any world that's not a star, asteroid, moon, or ringworld. A "Barren World" refers to either a hot Barren World or a cold Barren World.