8. The casino grounds used to be the Bethlehem Steel plant
At its height, Bethlehem Steel made the second most steel of any company in the world -- steel that was used to construct famous New York City landmarks like the Waldorf Astoria, Rockefeller Center, Madison Square Garden, and the Chrysler Building. But in 1995, they closed shop, and Bethlehem's Pennsylvania manufacturing plant became the country’s largest abandoned industrial site. Thankfully, the Las Vegas Sands Corporation bought the space, built a hotel, resort, and casino, thereby reinvigorating a town that was once a hallmark of American industrial might, and refurbishing a local landmark with high-end amenities.