What is considered East Side in Manhattan?

The East Side of Manhattan is the area of the borough of Manhattan in New York City that lies east of Fifth Avenue. It is generally considered to be the more affluent part of Manhattan and is home to many of the city's most famous landmarks, including the United Nations Headquarters, the Empire State Building, and the Chrysler Building. The East Side is also home to many of the city's most prestigious universities and colleges, including New York University, Columbia University, and Cornell University.