The gateway to the Upper East Side – and Manhattan's connection to the outer boroughs – begins with Lenox Hill. The area was named after Scottish merchant immigrant Robert Lenox that owned some 30 acres in the neighborhood. Today, the former farmlands have transformed into some of the richest square blocks in the world as well as the birthplace of medical innovation. Most of the neighborhood is encompassed within the Upper East Side Historic District, meaning that most of the homes and residential buildings here are prewar landmarks. Art deco and Beaux-Arts style townhouses line the streets. The Sara Delano Roosevelt Memorial House, a Neo-Georgian townhouse, is a perfect example of the structures in Lenox Hill. Modern structures, such as the architectural marvel of Edmond J. Safra Synagogue, add to the area’s majestic architecture. Lenox Hill ranges from East River to the east and Park Avenue to the west. The neighborhood begins at East 60th Street to East 77th Street from south to north. The 59th Street Bridge acts as the major conduit into the area from outside Manhattan.