Cities of the Underworld is an awesome look at history. By simply pulling back the layers of society that hides it from plain sight, you the viewer feel like you are given a backstage pass to the knowledge that hidden from the regular audience. It's very informative and fast paced so as to keep your eyes and ears glued to the revelations presented. The host Eric Gellar is energetic with a no holds barred craving for previously unrevealed underbelly of our thriving civilization. A must see History Channel production.