Timeless beauty located on a tree lined block just off Park Avenue. This majestic limestone townhouse has a sleek, contemporary appeal while uniquely balancing a classic allure. The imposing bowed facade with iron-work fencing and custom double doors creates a stunning and elegant entree. The outstanding interior with modernist detail and handsome millwork creates an exceptional, private oasis in the heart of the Upper East Side. Six floors with approximately 6,300 square feet of interior living space showcases 12 rooms including 4 bedrooms plus sitting room/ 5th Bedroom, 3 powder rooms, 5 Full baths, 4 wood burning fireplaces and a high-speed elevator with access to all floors. The garden level features a sweeping entree foyer with views through the solarium to the gardened patio, providing endless light throughout the home. The master suite is graciously positioned across an entire floor and features a large bedroom with wood burning fireplace and private sitting room. This home is sure to satisfy a variety of lifestyles with its formal dining room, fully equipped chefs kitchen, breathtaking living room with 18 foot ceilings, dramatic floor to ceiling windows and sweeping staircase providing a perfect setting for grand scale entertaining. For a more intimate setting, overlooking the grand living room is the library. There is no shortage of natural sunlight in this townhouse between the cupola style skylight above the living room, the over-sized windows that line the front and back of the home and the large solarium with an all glass garden entry. With direct access to the roof deck, a second outdoor space is there for your customization. No detail has been overlooked in the design of this modernist, single family residence.