In 2017, 144 skyscrapers (towers at least 660 feet tall) joined the skylines of 69 cities across the globeāa record that will likely be broken again before the end of 2018. This inquiry-based lesson combines individual investigations of primary resources and visual media with group analysis to investigate the following inquiry: How is the evolution of the American skyscraper related to broader themes of modern U.S. history, economics, and culture?