The deck of a cargo ship needs to be light enough to keep the ship afloat, but strong enough to support heavy loads. This engineering problem was solved by adapting the same building methods used for skyscrapers—ones which are designed to bear great weight without being too heavy themselves. Superstructures: Engineering Marvels is now streaming on Disney . | National Geographic Science

Sunrise on the Empire State Building Observation Deck is a special experience. 📷: @cinema_sb | Empire State Building