845 Fifth Avenue may have the grandest apartments in all of New York and is one of the most sought after residences in Manhattanâ€™s Lenox Hill. Built by James E.R. Carpenter in 1920, this 12-story cooperative is limestone-clad with a four-story rusticated base. Above the base, is smooth stone. The building structure wraps around Temple Emanuel, and many of the apartments have windows overlooking it. There are just 16 full floor apartments that have around 18 rooms, and very high ceilings of approximately 12 feet. The side-by-side living room and library are each 36 feet by 23 feet and take up the entire Fifth Avenue frontage overlooking Central Park. The Formal Dining Room is only slightly smaller, 30 feet by 22 feet. Many homes include multiple fireplaces, extraordinary entranceways, and exquisite detailing. This is a pet friendly building and also comes with a full-time doorman and concierge.