Think of this one as somewhat akin to grating cheese, only this one grates a human torso ever so slowly. A popular tool in Spain for extracting information from prisoners many years ago, the Revolving Drum calls for victims to be put into it face down, their heads through the upper pillory and their legs firmly strapped. Their torsos pressed against a spiked drum, the prisoners are then asked questions. Any sign of resistance, and the torturer then slowly rotates the drum one full revolution. This process is repeated, and torturers even go to the extent of placing weights on the backs of victims to further press their torsos towards the spiked drum and cause more pain. The result, naturally, is death by very slow disembowelment.

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A number of medieval torture devices have the word "Spanish" attached to it, but this one is probably the most gruesome. The Spanish Donkey gave victims an unimaginably horrible ride, and here's why. Victims are put astride, naked, the apparatus, which is actually a vertical wood board with a sharp V-shape wedge on top. Varying weights are then attached to their feet. Eventually, the victim's own weight and the extra baggage cause the wedge to slice through their bodies, splitting them in half. Yikes.