It's History
Why the Longest Tunnel in the World Leads to New York City (8x57)
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New York City is the pinnacle example of American development. Being the most populated city in the United States, it requires a tremendous amount of infrastructure – chief Among the most important of these systems is its waterworks which have a long and complex past. Today we discover a fascinating tale of underground piping, aqueducts, forgotten tanks, and the longest tunnel in the world!