From bearded women to men with no arms or legs, the outliers of mankind have fascinated us for centuries.

Now, thanks to the YouTube channel Dark5, we can take a look at five of the most peculiar and breathtaking sideshow freaks.

To check out the fascinating group of people yourself, give the video below a look.

In case you're skeptical (we were too), we reached out to Marc Hartzman, an author who has done extensive research on the topic and verified that each of them existed.

"They're all definitely real," Hartzman said. "Although I'm not sure this would be my top five."