Who doesn't love a good mystery?

There once was a time when motorcycles weren't as dear as they are now. Back in the old days, bikes were just like any other machine—built to be used until worn out, then scrapped. It makes sense, then, that so many old bikes were just left where they died or buried or otherwise squirreled away for one reason or another. That's how barn finds are born, and who doesn't love a good barn find?

Inspired by some weekend reading, I went looking for some weird and mysterious abandoned bikes and boy did I find 'em. Here are the five coolest ones I found with just some cursory digging (see what I did there?), but there are surely countless more. What about you all, have you ever found a mystery bike or an abandoned project wasting away somewhere? Let me know.