There was an open patch of sky below the clouds when I went to Lake Winnipeg for sunset shots. I saw that the sun would peak out from below the clouds and quickly set up for a shot, then looked for a sunset composition later on.
A really wide shot of mountains in Vermont, taken from Sentinel Rock State Park.
There are so many waterfalls in Iceland that I wasn't able to keep up with finding out the names of all of them. I found this one on the roadside and stopped for a few shots. If you like waterfalls, go to Iceland, there are hundreds.