What is beyond the realm of Gods. After have studied Hinduism, and more modern reality creation referring to concepts such as higher vibrations, higher realms that exists beyond our material, such as the astral or heavenly.  Also having witnessed fruits of human/divine will and the power of creative imagination, such as people being healed. 

However I have yet to truly study Buddhism, but I have a lingering sense that, unlike Hinduism, which is concentrated on an entity. That there must be something beyond the Gods, who most likely exist on a heavenly, but nevertheless, on a lower plane. 

What is beyond that? Oneness of all concepts and Gods?  Infinite awareness?  Is it experiencial only?  What does Buddhism state when it comes to this?

Thanks guys.
The Theravada school teaches the thirty one planes of existence.

These 31 planes are separated into three major categories:


Immaterial or formless world (arupa loka)
Fine material world (rupa loka)
Sensuous world (kama loka)


The sensuous world is divided into:


Happy destinations (including the human realm)
Unhappy destinations (including hell and the animal realm)


The immaterial world has beings with mind but no body. This world is above or beyond the gods (brahmas and devas). The realms here include:


Neither-perception-nor-non-perception
Nothingness
Infinite Consciousness 
Infinite Space 


It appears that devas (a type of god) and humans live in the happy sensuous destinations, while there are brahmas and devas (types of gods) living in the fine material world. Brahmas are superior to devas.

Those who have reached the level of non-returners (anagamin) would be reborn in the upper five realms of the fine material world. After this, they gain enlightenment there and would no longer be reborn, after passing.

All beings, whether formless beings or gods or humans or animals or ghosts etc. are not immortal. The gods like the Maha Brahmas may live for a very long period of time, that they may assume that they are immortal, according to DN11. All unenlightened beings would face death and rebirth, while enlightened beings would no longer be reborn after physical death.

The Buddha is said to be the highest type of being of them all, who is enlightened and has psychic powers allowing him to teach gods and humans in the fine material world and sensuous world. But even he is not immortal or permanent.

The only thing that is not impermanent is Nibbana. Udana 8.1 describes it as:


  There is, bhikkhus, that base where there is no earth, no water, no
  fire, no air; no base consisting of the infinity of space, no base
  consisting of the infinity of consciousness, no base consisting of
  nothingness, no base consisting of
  neither-perception-nor-non-perception; neither this world nor another
  world nor both; neither sun nor moon. Here, bhikkhus, I say there is
  no coming, no going, no staying, no deceasing, no uprising. Not fixed,
  not movable, it has no support. Just this is the end of suffering.