The Flaming Rocks of Chimera, Turkey

Near Çıralı, Turkey, on that nation's southwestern coast, you can find fires burning near the shore. They've burned for thousands of years, fueled by underground sources of methane and hydrogen. Kaushik of Amusing Planet writes about the impact they left on ancient observers:

For hundreds of years, sailors could see the flames from sea and used them as a landmark to navigate, but today they are more often used by hikers to brew tea. These flames, according to some ancient literature, gave birth to the myth of the Chimera, a fire breathing mythical beast with the body and head of a lion, with the head of a goat arising from its back, and a tail that ended in a snake's head.

You can find more photos here.