House on the Hill,An Opulent 109-Year-Old New York City Mansion Lists for $59 Million | Architectural Digest,Harriet the Spy's $5M Upper East Side Townhouse Finds a Buyer | 6sqft,8408 Hillside Ave. - The Oppenheim Group Real Estate | ID - 144422,House on the Hill (@houseonthehillbaby) · Instagram photos and Reels