Envisioning a fictional world

I'm working on a fantasy story that's been many years in the making. It's evolved so much since the idea first occurred to me (probably more than a decade ago) that sometimes I struggle to sort through all the thoughts I have had to reach the ones I want to write down. I've found that saving pictures I find can inspire me to imagine the setting in more detail. Here are some images that help me build the story's world.