Modern Marvels

Modern Marvels
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Available Formats Modern Marvels Secure Scanned : 09/26/2025
Modern Marvels

Modern Marvels - Season 11 Episode 40

Modern Marvels 2004 -

Overview:The St. Lawrence Seaway is a monumental stairway in water, lifting massive ships hundreds of feet over thousands of miles. It’s the world’s longest inland waterway, a system of rivers, lakes, canals, dams, and locks that stretches 2,400 miles. And it’s one of the greatest engineering triumphs of the 20th century, pulled off against the violence of raging water and extreme winter. An essential part of the commercial infrastructure of the US and Canada, this complex system provides direct access from the Atlantic to North America’s heartland, enabling ships packed with trade to stop at any one its 65 ports–from Montreal to Duluth. From the 16th century, when French explorer Jacques Cartier searched for the legendary Northwest Passage, to the modern Seaway, built in the 1950s, we highlight the incredible engineering feats that went into creating the waterway.

Watch Trailer First Air Date: Dec 10, 1993 Last Air date: Aug 08, 2022 Season: 23 Season Episode: 705 Episode Runtime: 44:14 minutes Quality: HD IMDb: 3 / 10 by 29 users Popularity: 7.5493 Language: en

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