Dreaming of a place you have never seen before and then realizing that the place actually exists?

[Anonymous]

did this ever happened to you if so do you know how do we call it

[Iron_Man]

You must have saw it somewhere before the dream and had forgotten about the place

[Asker]

actually no I really never saw it before the dream or even been there also I didn't even know that this place exists

[Iron_Man]

That doesn't add up how can you be so sure?