Heaven: What and Where is it?

"Heaven is not a far-off, other-worldly place we go when we die for which we have no context. Heaven is simply the realm in which God works and governs, and he is bringing heaven to earth. When the Jewish people in the time of Jesus thought of God’s future Kingdom, they expected it to be real and tangible. Jesus challenged their political motives and how that Kingdom would come, but he did not discredit the concrete nature of their hopes. God’s Kingdom is flesh-and-blood real. The New Jerusalem that John describes in Revelation is not some fantasy land; an artificial façade like something you would see at Disney World. It is our world, totally renewed and restored to God’s original intent for humankind." (from Michael Fisher's blog: 'The Mustard Seed). I think this is very close to the truth - if not fully so.