Maybe this should go into the newbie zone, but, it can be moved, isn't it?

I have had some experiences with LD's but I'm still new with them. Before finding this site I found tons of information about LD. I can remember a thing that made me wonder. I read about some places in the "dream plane" that can be found by anyone. Those places vary from person to person but they maintain a common factor, they maintain the idea of the place.

Have you heard about this before? I remember something about a "Palace" where most Dream Guides were, and a kind of library where you could read books about things happened (maybe Akashic archves?) But I can't remember them exactly.

Anyone that had heard about it? and if it's possible that had visited these places?