The Upper East Side is known for being New York’spossibly the country'smost elegant residential neighborhood, with streets near Park and Fifth Avenues conveying the hushed ambiance of the privileged and powerful. The majority of apartment buildings here were built between the turn of the century and the 1930s. Central Park, on the western border of this area, makes a world-class front yardwith its zoo, tennis courts, formal gardens, bridle paths, running tracks and reservoir. Madison Avenuepossibly the world’s most famous retail address and famed center of the advertising industry in the mid-20th centuryentices shoppers with boutiques like Chanel, Prada, Tiffany and fashion mecca Barney's New York, and a more commercial strip runs through the southeast corner, anchored by Bloomingdale’s at 59th Street and Lexington/Third Avenues.