Ambassadors visiting this most international of Ayutthayan kings would have witnessed something like Ratchadammoen Avenue around the birthdays of the present king and Queen. Millions of Thais flock to view this electric firmament, which spreads kingdomwide. Fountain of incandescence cascade off branches or gather in curtain - like swathes. Flashing wires the height of a skyscraper strobe across displays of royal insignia, their contours studded with tiny bulbs.