Where Is the Paradise of God?

In Revelation chapter two, Jesus says to the people of Ephesus: If you guys overcome the obstacles in your way to remaining faithful to me, I will give you the authority to be with me and to eat from the tree of life that is in the paradise of God. And we know at least one thing that it's on a Greek island called Popmos. So this opens up a parallel question, and this is another type of thing that I like to nerd out about when I'm getting the runners high on the trail - where is paradise?