There is always more than meets the eye in CITIES OF THE UNDERWORLD, a popular History Channel series dedicated to exploring long-lost streets and chambers buried beneath the world’s largest metropolitan outposts. Hosted by Dan Wildman, the program journeys far below the active asphalt in New York, Washington, D.C., and cities throughout Europe and Central America, uncovering incredible underground military bases, secret hideouts, and entire city structures shrouded in darkness. This collection includes every episode from the second season, including "A-Bomb Underground," "Stalin’s Secret Lair," and "New York Secret Societies."