'The real thing' from decades past may be worth keeping.
1970's wood paneling
seventies interior - Google zoeken
ArtStation - Alien: Isolation Concept art 05, Brad Wright
Sci-Fi Corridor by =samdrewpictures on deviantART
SeanSoong - fantasy art. Maybe the inside of the Council room/theatre could look something like this.
I wish I knew more about this image