Thomas Heatherwick designed temple:
This made me wonder about lamination as a technique for sculpting an automaton head.
The idea is to carve something as a model in a simple laminated material, then disassemble the model to create a series fo laminate layer templates. These could then be cut from the final material required (like wood or plastic or stone) and reassembled and finished off by carving out the edges of the steps by hand.
hmm...