The most obvious use of gates is to monitor the flow of visitors, or block intruders from entering a site. But the 25 gates surrounding the campus green of Harvard University, in Cambridge, Mass., mean much more to Blair Kamin, a Pulitzer Prize-winning architecture critic for the Chicago Tribune. Kamin, who spent time at the Ivy League school for his Nieman fellowship, detailed the designs of each structure, by iconic architecture firm McKim, Mead & White, in his recent book, Gates of Harvard Yard (Princeton Architectural Press, 2016). In it, readers will discover storytellers of the university's past and how they have influenced students, staff, and alumni. For instance, icons of crosses display the school's history of training ministers, and forms of leaves and flowers illustrate how the Harvard Yard gardens integrate with the city's streets.