Upper East Side and the Museum Mile Museum Mile and More The upper streets of Manhattan’s East Side are some of the priciest living quarters in the United States. History tells us that this was due to the Upper East Side’s favorability among the New York elite. These people included the oil maven Rockefellers, political Roosevelts, dynastic Kennedys, and thoroughbred racer Whitneys. As such, there are also many high-end museums along Fifth Avenue called “Museum Mile.” The elegant Frick Collection houses a smattering of rare paintings and sculptures. The Morgan Library and Museum turned Pierpont Morgan’s mansion into a world-class research center. The splendid Metropolitan Museum of Art and Guggenheim Museum are further up. (The latter is dedicated to contemporary artwork.) The Whitney Museum emphasizes living American artists, while the Cooper Hewitt Museum thrusts design and architecture into the spotlight. The Museo del Barrio, Jewish Museum, and the Museum of the City of New York all celebrate the local ethnic diversity.