I've not crossed it either, but I hear the tramping goes up a few notches in difficulty on the other side. Staying in NZ. One of my all-time favourite spots.
We can't seem to tempt any newcomers, so here goes again. I have never visited Japan but my research is telling me this is from within the Wada House in Shirakawa-go. It is a Gassho-zukuri farmhouse owned by the Wada family, one of the wealthiest families and village leaders of Ogimachi.
John W
In Nature's keeping they are safe, but through the agency of man destruction is making rapid progress - John Muir c1912
Looks like no other takers. Bridge of the Gods between Washington and Oregon states near North Bonneville, also part of the PCT route I believe. Apparently named after a historic land bridge on the Columbia River. I hope you're not on the actual roadway with 2 lanes of traffic bearing down!
John W
In Nature's keeping they are safe, but through the agency of man destruction is making rapid progress - John Muir c1912