Was The Empire State Building a Blimp Port? IT'S HISTORY
22:14
New York's LOST Pulitzer Tower | The Rise and Fall of The World Building - IT'S HISTORY
22:22
Chicago's Forgotten Lake Tunnels, Cribs, and Waterworks - IT'S HISTORY
22:26
When Chicago built the Tallest Building in the World | The story of Sears Tower
24:15
What's on the rooftops of New York's most famous skyscrapers? - IT'S HISTORY
24:14
Why the Brooklyn Bridge used Elephants to Prove its Safety - IT'S HISTORY
27:32
Why New York's Skyscrapers Keep Changing Shape
21:52
The Golden Gate was a Military Fort - IT'S HISTORY
1:36:15