Think you know the ancient world? Think again. To this day, there are still mysteries surrounding the ancients that have us questioning what we know about these incredible civilizations. Secrets that demonstrate incredible technology comparable to our own: an ancient computer, models that demonstrate flight, stones weighing hundreds of tons seamlessly transported. All incredible enigmas, but which of these Top 10 ancient mysteries tells us the most about the ancient world we think we know?

Behind every great empire there is a central metropolis, driving expansion and governing the great empires that called these cities home - hubs of technology, politics, engineering and massive populations comparable to cities of today. From the grandeur of Rome to the intellectual seat of Alexandria to the legendary home of democracy, Athens, the ancients built cities that would leave their mark on history. But which of these Top 10 ancient metropolises will take the crown as most renowned?