You have probably seen this design before on t-shirts, the internet, or on people’s skin, an eye in a triangle that seems to be looking at you, observing you, staring at you even. Called the all-seeing eye or the Eye of Providence, this symbol is very popular among tattoo enthusiasts. It’s a great detail to add to a larger piece to give it a mystical touch, but it also works wonders as a stand-alone. The all-seeing eye is a simple but powerful symbol that can easily be declined in all possible tattoo styles. But what does it mean, really? Let's try to find out by tracing back the roots of the symbol itself.