This has to be the oldest dream I remember, my guess is that I was around 5 or 6 when I saw this. Some details are surely missing.
I'm standing in an area, somewhere inside something fairly bigger and tall people are walking around. I'm pretty tiny as I am just a child so I can't see their faces, only their legs and waists, with a hint of the upper body.
All of them are pale grey, they don't seem to be wearing any clothes. Not that they seem to need any.
There are brightly lit and colorful panels surrounding the walls, high beyond my reach. No-one is really paying any attention to me so I'm just standing still and looking around until I see a panel I can barely reach.
I try to touch the [...?? Detail missing!] on the panel but then someone comes to me and says I shouldn't do that. Notice, he isn't speaking aloud. I just kinda...hear it.
The same way without anyone saying it to me I just know it is time to leave. I understand this place and the people are dear to me and it feels like home, I don't want to leave. They understand it too but I am told, still without a word spoken aloud, that I do not have a vote in this, I will be left behind.
The next thing I know I'm standing outside. It is night, I can feel and see grass beneath my feet, I am barefooted. I see stars in the open sky and suddenly something takes off in front of me, a bright, colorful object dashes to the sky so quickly it is hard to describe, joining the other stars in the sky.