Legend has it that Cleopatra took her own life by succumbing willingly to the bite of a cobra. If this story is true, was suicide by snake venom an easy way to go, or did the last Egyptian pharaoh die in excruciating pain?

Learn the reason for the death of Cleopatra.

Some mysteries may never be solved—but others are begging to be! Explore nine ancient enigmas in this episode of History Countdown.

Workers carved the 700-ton Obelisks of Luxor from a single piece of red granite.