One of the highest ones and easiest accessible is Tateyama in Kurobe located north of Tokyo:
The Tateyama Kurobe Alpine Route is a spectacular route through the Northern Japan Alps, which can be easily followed by using various means of transportation, including cablecars, trolley buses and a ropeway – if you in transportation stuff … that’s the place to go ;-)
Here you find the highlights of the trip
Kurobe Dam is with a height of 186 meters Japan's tallest dam
Tateyama Ropeway
Japan's longest one-span ropeway (1.7 kilometer long ropeway operates without any support towers between the lower and top stations)
Murodo offers fantastic views of the Tateyama Mountain Range
The Murodo Station complex includes Hotel Tateyama, Japan's highest located and great for the night views and spectacular sunsets.
Within a short walk over the snow plateau you can also reach Japans highest Onsen – don’t miss the homemade blueberry cake there ;-p)
Tateyama Snow Corridor
In case you would go there between April to May, the road from Bijodaira to Murodo runs between up to 20 meter high snow walls. The snow corridor is most spectacular around Murodo
Shomyodaki Falls
The highest waterfall in Japan, the Shomyodaki Falls collect water from the Tateyama mountains and erode the Midagahara plateau to form a V shape before cascading down 350 meters. The falls have four stages: the first 70 m, the second 58 m, the third 96 m and the last 126 m. The bottom of the waterfall is 60 m in diameter and 6 m in depth
The whole trip can be easily done within 3 days and doesn’t require any alpine experience or special equipment for mountaineering.
So it is a perfect escape for overworked city slickers as I am :-)
I love Japanese Signs