Mary Lasker, New York's most beloved philanthropist's, former home and salon. This approx 5,500 sqft dramatic baronial residence is perched high above the East River with views forever. 57 full height windows provide dazzling light and spectacular views of the East River, the UN Gardens and the New York City skyline.    Re-designed by the current owners, this grand 14 into 8 room residence, featured in Architectural Digest, is masterfully detailed with finishes including: Parquet de Versailles floors, Burled Elm paneling, 48 Mahogany doors, P.E. Guerin hardware.    An elegant Foyer with Powder Room opens to grand wood-paneled Triple Galleries leading to a breathtaking 49-ft long Bibliophile's Library with sweeping East River views. The dramatic 37-ft long corner Living Room faces East and South with outstanding river and city views. The double exposure, 29-ft long Formal Dining Room is ideal for gracious entertaining. A new gourmet Kitchen with top-of-the-line appliances includes a Pantry and washer and dryer.    The South Wing's Master Suite is complete with a Sitting Room/3rd Bedroom, two marble Bath Spas and two Dressing Rooms. A separate North Wing, Guest Suite, offers a private Bedroom, Home Office/4th Bedroom and en-suite marble Bath.    870 United Nations Plaza was designed by master architects Harrison & Abramovitz and is one of the world's most iconic residences. This architecturally prestigious luxury Cooperative has the longest private driveway in the city which leads to a grand triple-height Lobby. 53 staff members provide residents with 24 hour service and security. Superb amenities are on-site Management Office, new Fitness Center, Pilates Studio, Private Residents Club 39 - a lounge with kitchen and entertainment rooms, 2 Conference Rooms, Golf simulator, Billiards Room, in-house Dry Cleaning Service, Rooftop Sun Decks and Garage. Pets are welcome.    This once-in-a-lifetime residence is ideal for grand scale entertaining and luxurious living.