From London to Tokyo to Dubai, the skyscraper is a part of every modern city, but no city has done it better, or longer, than New York. Starting in the 1920's, the booming economy, use of steel, and advanced engineering took skyscrapers into reality for the first time. Hey, who wakes up one day and says "Hey, I want to create a museum"? Carol Willis does. In 1996, she founded and still runs the Skyscraper Museum in Manhattan which explains the history, allure, and future of tall buildings - plus a new class of thin and incredibly expensive structures called supertall.