A rare opportunity to own a grand, exquisitely-proportioned four-bedroom, five-bathroom home in one of the few prewar condominium buildings on Park Avenue. Built in 1925 by renowned architect James Carpenter, The Mayfair is one of New York's finest residential buildings. With only 68 residences, it offers superlative white-glove services and amenities that include full-time staff, a fitness center, optional housekeeping, and room service from internationally renowned restaurant Daniel located on the ground floor. Apartment 10A occupies the entire Park Avenue facade of its high floor, with three bright and open exposures. A gallery-sized entrance foyer opens to an expansive L-shaped living room overlooking Park Avenue. This light-filled, generously-proportioned room with a wood-burning fireplace is ideal for entertaining on a grand scale. The sprawling home boasts a corner study with a view down Park, a formal dining room, a sunny, south-facing eat-in kitchen, a corner primary suite with an adjoining office, two additional bedrooms with ensuite baths and a secluded maids suite with its own entrance beyond the kitchen. Designed with classic prewar elegance, the configuration of the rooms and hallways is designed to provide maximum privacy between public and private spaces. The Mayfair is ideally located on Park Avenue and 65th Street, two blocks from Central Park, and surrounded by New York's finest boutiques, restaurants, galleries and museums. Location, refinement and architectural excellence make this spacious prewar condominium apartment the epitome of gracious living on New York's Upper East Side.