Primal Space | Why Are Cities Built on Top of Each Other?

Have you ever walked through a city and wondered what might be hidden underneath?

In this video, we explore the fascinating phenomenon of layered cities, where entire civilizations were built on top of one another.


From the buried ruins beneath the Roman Forum and the Basilica of San Clemente to the multi-layered city of Troy and the sunken streets of Seattle, learn how history gets hidden underground and why street levels rise over time.


00:00 - Why Are Cities Built on Top of Each Other?

01:11 - What's Beneath the Basilica of San Clemente?

04:48 - Artificial Hills (Tells) Explained

05:22 - The Ancient City of Troy

06:08 - Sinking Cities: Shanghai

07:00 - Seattle’s Underground City



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