How Did They Build That?

Season 3 Episode 8: Subways & Sightlines

A sculptural high-rise with rippling balconies breaks the mold in Chicago. Mammoth machines bore 26 miles of tunnels for an underground railroad beneath London's city streets.

Genre:

Documentary

Seasons:

4

Episodes:

38

Actor:

Jay Ellis

Quality:

HD

Status:

Returning Series

First Air:

2021

IMDb:

8.0