Photos in one hour!

For today's /p/hoto event, I'd like to go through either one or two big worlds that I consider among the best photo material around. However, it's easy to get lost in those worlds, it's also easy to take the wrong route, so please stick close to the host. I'll do my best to look out for everyone, but if you want to stop by and take a photo or set up some scene, try to make sure I've noticed it and stopped with the whole group.