The south facing duplex apartments at the iconic Millan House, built by John D. Rockefeller, have always been great favorites among denizens of the Upper East Side. This duplex is particularly lovely as it looks out onto the trees, emphasizing the original intention of quiet townhouse living within a fully serviced cooperative. Downstairs you enjoy the gracious entertaining rooms including a library with full bath - if an extra guest room is needed. The living room has a working wood burning fireplace for cozy winters, and the entry hall still retains the classic Rockefeller stonework. A large eat in kitchen with double staff room is at the very back of the floor. Upstairs are the three large bedrooms - all with private baths. A distinguished Upper East Side treasure, Millan House is a landmarked, 11story neo-Romanesque cooperative completed in 1931 and designed by self taught architect Andrew J. Thomas. Comprising two connected buildings at 115 East 67th Street and 116 East 68th Street, the property contains 57 residences linked by a formal rear garden and elegant common areas. Originally developed by John D. Rockefeller, who purchased the land in 1929 and broke ground in 1930, the twin buildings were conceived in part to house employees of the Rockefeller Institute. Early notable residents included Dr. Simon Flexner and leading New York figures of the era. Millan House's architectural presence, storied provenance, private garden, and intimate scale make it a rare offering for buyers seeking period character, privacy, and Manhattan prestige. The building just completed local law 11.