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From Rome’s buried temples to Seattle’s sunken sidewalks, this video uncovers the astonishing truth about layered cities—where centuries of civilization stack atop one another. Explore the Basilica of San Clemente, the ruins of Troy, Shanghai's sinking skyline, and more!
Chapters: 00:00 Why cities are built on top of each other 01:11 The buried secrets of San Clemente 03:22 Sponsored Content 04:48 Artificial hills (Tells) explained 05:22 Troy’s 9 lost cities 06:08 Shanghai’s sinking crisis 07:00 Seattle’s ghostly underground

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