One of the things that was most memorable was Crater Lake. It was little bit like seeing the Grand Canyon for the first time; you know all about it, and have seen pictures, but nothing can prepare you for the reality. Crater Lake is such an intense blue that you can't help but stare and stare, and take LOTS of pictures. I'll restrain myself here and only present a few.
Starting with my favorite one of just the water:
This is overlooking Wizard Island.
Scenic Crater Lake, with snow!
More soon.