One of the six simple machines and perhaps the most important invention in the history of mankind, the wheel has been essential in all aspects of life.

Think you know towing? As simple as engaging a tow man when your car is stalled? From mighty tugboats to dizzying roller coasters, to funicular railroads that climb mountainsides, when it comes to towing, being a "drag" was never so good!

The Chrysler Building in New York City was at one time the world's tallest building. Find out how his Art Deco masterpiece has become one of the most beloved skyscrapers on the city skyline.

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