This isn't one of my own DIY projects, but it's food for inspiration nonetheless. I stumbled across this fence years ago somewhere online and have been fascinated by it ever since. In fact, it's one of the (many) reasons I've wanted to take up welding--because you know, I need another hobby.
I can't remember where this fence is located, though I do recall it taking the owner several years to create. Just goes to show what you can do with a little creativity and a will to recycle.