Hologram

Hologram gives the affected tile the appearance of being another structure, usually an adjacent structure. If there are no valid adjacent structures (i.e. the only adjacent tile is a Geothermal Plant) or if all adjacent structures are the same as the hologrammed tile, it will instead mimic a non-Offworld Market advanced building (such as a Patent Lab or Hacker Array). It does not prevent a Spy from seeing what the tile actually is.