11 Sutton Place, designed and renovated by architect I.M. Pei, sold for $8.6 million after being listed for $8 million and receiving multiple offers. I.M Pei is known for designing such landmarks as the Louvre Pyramid in Paris, the John F. Kennedy Library in Boston and the Bank Of China Tower in Hong Kong. The 3 story 3,800 sqft townhouse has 4 bedrooms 3 baths and 2 powder rooms. 11 Sutton Place is part of a 14 townhouse enclave that share a private park overlooking the East River. [Mansion Global]