Is There Such Thing As A Spirit World?

Yes and no. In beliefs, there is such separations. In Cosmic Truth, there is not. Everything is of one existence, not separated.

In Shamanism, there is known of three worlds. Sky, earth, and underworld. In the bible, there are also three different realms. In Buddhism, there are more, but are taught to be also an illusion. Remove any belief, you only get one existence. For all realms are connected to one existence. Keep meditating on this for any real.

Then why there is a heaven, and there is an astral plain, and so forth? Existence is endless, all are part of one. There are many layers of existence, but all are connected. Existence is also an illusion, yet real. It is all made up of dream like reality, all made up of energy. Why? Keep meditating on this, seek the real for one's need. Explore without belief, one will find truth in time.