Yosemite's Fire Waterfall. The spectacular view of the waterfall is created by the reflection of sunlight hitting the falling water at a specific angle. This rare sight can only be seen at a 2-week period towards the end of February. Gotta see that, and the Frazil Ice, someday.
On the highest mountain in Taipei, Datun Mountain, you can see the beautiful sea of clouds during late winter or early spring. If you are lucky enough, the air is clear enough to see very far away, with the stars and the city's colorful lights twinkling through the clouds.