I think I mentioned this earlier, but Hitoyoshi (in Kumamoto) was a test site for new high definition television broadcasting technology:

"In January the broadcaster's Science & Technology Research Labs conducted the 8K Ultra HD single-channel test from its bureau in Hitoyoshi, Kumamoto Prefecture, southern Japan, to a receiving station 27km away."

http://www.tvbeurope.com/main-content/full/nhk-to-demo-8k-wireless-first/gl0#.UyjgkNwiac8