Unless I’m mistaken, the Discovery bridge has been added only recently as well.
For those who don’t know the Roddenberry Archive: have fun exploring. On some ships you can even leave the bridge and go to different areas of the ship (for example the shuttle bay or main engineering on the Enterprise D). Also, sometimes you can move or activate objects like consoles.
I found out about this project recently on Mastodon. It seems to be an unintentional secret! It is amazing.