4. Historic Villages of Shirakawago and Gokayama:
In Shirakawago, there are 114 thatched houses with steep raftered roofs which look like a pair of hands held together in prayer. The steep roofs with approx. 60 degrees from horizontal, are constructed of timber bound with "NESO", a kind of rope made from hammered saplings of your "Mansaku" trees. The wide attics have two levels and were used to real silk-worms to make silk, which was the main income source for this region many years ago.
5. Hiroshima Peace Memorial (Genbaku Dome):
This "Genbaku Doom" was located only 50 meters away from the ground-zero of the atomic bomb. The whole Hiroshima city was destroped immediately by the heat blast and shock waves for a less than 30 seconds after the explosion. Hence, people say that it is really a miracle to have this iron frame of this building survived. The building has been preserved for the future generations to remember this horror and misery, which was used for the first time in human history.
6. Itsukushima Shinto Shrine:
Itsukushima Jinja is the only shrine available in the world right now, being built over the surface of the sea. since ancient times, even the priests were not allowed to live on the island, because the island itself had been considered as a holly symbol. In Edo period people had to visit the shrine by boat through the "Torii" gate built in the sea.