Any view that gets covered with snow changes and turns beautiful. I'm partial to this gorgeous view of Kinchakuda's Ai Ai Bridge (Hidaka, Saitama). It is a beautiful scene ordinarily but covered with snow looks like something out of a storybook. I have been trying to upload the photo but have been unsuccessful. Bug in the system? Will try to post the photo later.
I loved the village of Yunishikawa Onsen, and Hokakido's Otaru with the lanterns placed in the canal in winter. But I agree with Sherilyn - many views that seem just "normal" can become striking when covered in snow. If it snows again in Tokyo this year, I'll head to one of the Metropolitan Gardens. They would be lovely in the snow.
Any mountain covered in Snow is amazing especially when it sticks to the trees and when it covers the countryside it changes the view so much. The snow festivals are amazing like in Otaru and Sapporo. And snow always looks good when you're sitting in an onsen.