Because this shelter was built during the Cold War Era, some things obviously look somewhat ancient, but it is clear that there were major renovations after Golden Dawn acquired this underground facility.
Therefore, after using a card and a password to open the door from the outside, The big door opens automatically, rather than manually as it was during the Cold War.
This is an underground shelter that can accommodate 200 people for three months, the entire underground building looks quite old, and many of its decorations are clearly outdated, yet there isn't much dust on the Ground, indicating that someone manages it regularly.
As for the various electrical Equipment inside, it's obvious that they have been replaced with modern ones, such as using LED lights instead of Incandescent or Fluorescent lights, and as Leonard passed through a door, he realized that the equipment inside had also been modernized.
