Where is heaven?

Is it right to think of God, Who is everywhere present, as a person located in heaven, such as we have in the Lord's Prayer—Our Father which art in Heaven?

I will reply to that question by my answer to another, Where is Heaven? Universal Creation is Heaven. The earth which you now inhabit, even to its very central depths, is heaven. Each planet, as it rolls on in majesty throughout the grand ocean of space, is heaven. 

Everywhere, wherever God is, there is Heaven.

But just a few minutes ago, you spoke of coming into the immediate presence of God, does that expression not imply a place?No, not so much a place as, I think, an advance on the part of the spirit in purity—or, as the ancients taught, becoming so like unto God in holiness as to become Gods. These ancients taught that the purer the life, the nearer to God, and they got such ideas from the spirit world. 

But as Ruisdal and Steen have often told you, there is a Great Centre, the Heaven of Heavens, the Throne of the Great and Holy Spirit, whence flow out in copious streams His gracious influences to all, but especially to man, over all His vast and glorious kingdom.

—Hafed, Prince of Persia