Similar to コルサント

485 (number)

488 (number)

499 (number)

508 (number)

514 (number)

563 (number)

587 (number)

708 (number)

839 (number)

923 (number)

1226 (number)

Megastructure

Arcology

Atlantropa

Artificial structures visible from space

X-Seed 4000

O'Neill cylinder

Alderson disk

Space elevator

Bigger Than Worlds

Stanford torus