Up Next
Back to Show
Ancient Invisible Cities
Athens' Hidden City Walls
Inside a modern multi-story parking lot in the center of Athens is a remarkable section of Athens’ city walls, built in the early 5th century BC.
Support Provided By
Unlock with PBS Passport
53:53
Professor Darius Arya uncovers the often-invisible treasures of Istanbul, Turkey.
Unlock with PBS Passport
54:20
Darius Arya uses the latest scanning technology to reveal the historical secrets of Cairo.
Unlock with PBS Passport
54:27
Darius Arya uses 3D scans to reveal the secrets of ancient Athens, the home of democracy.