I live in Tokyo. I travel on the Shinkansen (bullet train) to the western cities (e.g. Nagoya, Kyoto, and Osaka) of Japan quite often. In a particularly busy week last year I traveled to and from the Kansai region four times within seven days. Shinkansen is quite indispensable.
When I was a kid, traveling on the Shinkansen was a magical experience. As the train leaves the Tokyo station, and passes through Odawara and Atami, I would start looking expectantly through the window, waiting for Mt. Fuji to emerge in its magnificent appearance.
Mt. Fuji is quite arguably the most fascinating and awe-inspiring mountain in Japan, and looking at the rocky apparition was the highlights of my travels in childhood.
Nowadays I am busy doing this and that on the train, and rarely gaze at Mt. Fuji for a prolonged time. The trains are now equipped with WiFi. Otherwise I am deep asleep, and do not notice the passage of the heavenly mountain.
Even on these prosaic days I do sometimes glance at the most famous mountain in Japan, and the magic of childhood days returns to this insensitive soul.