Watch out for green tea farms on Shinkansen
You can enjoy drinking tea, as well as watching it grow! Shizuoka-prefecture is the top producing area for Japanese tea, and you can see tea farms from Shinkansen.
One hour from Tokyo on the bullet train, you may easily locate those farms on both sides of the railroad. Even if you don't know what tea trees look like, you will notice a pole with a fan in the field, which you may find strange. Green tea farms typically have these to avoid frost.
Many people expect to see Mt. Fuji in the area, but in many cases, you cannot see it due to clouds. But tea farms are always there for your eyes!