An interactive rendering of Fig. 9 from Z'ev ben Shimon Halevi's Psychology and Kabbalah (Ch. 4) — where the Trees of Azilut, Beriah, Yezirah and Asiyyah overlap to form one continuous ladder of consciousness.
Click any sphere for what it means in that World. Click a glowing joint where trees overlap to see the Worlds meeting. Use the legend to isolate one World, or take the guided tour.