Resembling an elephant about to topple slowly to one side, this megalithic stone table has crouched in this green field for millennia. No one knows its purpose, though archaeologists suspect the dolmen was built to mark the burial place of a long-dead king. The gigantic stack of stones is estimated to be 5,000 years old, and for many centuries, people believed it had been built by giants. Today, archaeologists say the vast capstone—believed to weigh a colossal 100 tons—was likely rolled into place up an earthen ramp that was then destroyed. Faced with the sheer massiveness of these stones, you may prefer to stick with the tale about the giants.