Despite not being thought of as such, DC is in large part a city of campuses, each its own body of organ-like buildings and cavity-like courts and quads. Like Mexico City, Paris, Athens, and other world cities, DC was modeled on Rome and its central Campo Marzio–even before it became the US capital, the creek running through the middle of DC was called Tiber Creek and a man named Francis Pope called his land along the creek Rome. From governmental, military, and academic to religious and health-based, these clusters dominate the urban fabric while hardly being noticed.