Both sides of the city's brain combine here to form the catalysts for Philadelphia's new economy. The University of Pennsylvania, Drexel University, and University City Science Center form a triumvirate of big thinking. They're creating more than doctors, researchers, entrepreneurs, engineers and next-generation leaders -- they're also creating a world-class neighborhood rich with diverse restaurants, international talent and big ideas. The University City District has helped bring it all together by backing sustainability, community development and entrepreneurial initiatives.