In major cities all around the world today, skyscrapers loom overhead, taxis honk their horns and street vendors peddle their wares. But below lays city upon city - each with its fascinating and unknown history. CITIES OF THE UNDERWORLD explores these layers, which are often hundreds of feet deep.
Last Episode03x13 Alcatraz Down Under Aired: Feb. 09, 2009
An exploration of the underworld of Sydney, including a 19th century prison, caves which were used by fugitive outlaws, and gold mines. Also, …
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