you seem to have the term dimension wrong!! haha
a dimension is a plane of view and movement. We live in a three dimensional world or 3D world because there are 3 axises x,y,z.
It is theoretically possible to have more than 3 but not yet proven.
Well, yes, there are other dimensions in this world. Paranormal creatures such a ghosts and supernatural beings such as elves and fairies do exist. Only that those who are gifted with what they call third eye are the only ones who can see them.
Fine you got to feel the dimensions no eye can see it fullest just of feeling it. like to feel such exprience in real ok got to a hair dresser shop they you can see few and exprience the whole look you reflection in both mirrors in front and back of you.