Interactive family program inspired by A Grand Idea: How William J. Wilgus Created Grand Central Terminal by Megan Hoyt. Through a read-aloud, children will discover how civil engineer William J. Wilgus redesigned New York’s 19th-century Grand Central Station into the great terminal we know today. Kids will explore big ideas like underground railways with buildings above – concepts explained in our new exhibition, The Invention of Park Avenue. Kids will then create their own train routes, platforms, and towers using arts and crafts materials.