815 Park Avenue unit: Ph3 Ph3 Perched atop one of Park Avenue's most distinguished prewar buildings, this extraordinary penthouse studio is a rare Upper East Side gem. A wood-burning fireplace anchors the living space with warmth and old-world charm, while the dramatic wraparound terrace delivers an exceptional indoor-outdoor experience rarely found in the city. Whether hosting under the stars or enjoying quiet mornings above the skyline, this residence offers a lifestyle that feels both intimate and grand. Built in 1917, 815 Park Avenue is an iconic white-glove cooperative set on one of the neighborhood's most prestigious blocks. The building offers full-service living with a full-time doorman, fitness center, game room, bike storage, laundry facilities, private storage, and a live-in resident manager. Perfectly positioned near world-class hospitals, cultural institutions, dining, and shopping, this address combines timeless elegance with unmatched convenience.