If you ever have the opportunity, fly from New York to Tokyo*. The route goes north, up though the very top of Alaska, over miles and miles of pure white snow and frozen lakes, with absolutely no sign of people. Then a short stretch of ocean and then down through Siberia. This time with enormous cliffs and mountains of snow that drop dramatically into the ocean.

It was perfectly clear the whole way, and as we were flying west in the late afternoon, we had a perpetual sunset for most of the way. It was amazing.
* But don't fly American Airlines. Ever. No matter how cheap it is. It's like being in jail. But I'm sure you get better food in jail. There isn't even any booze! Not even to BUY!