This Elegant $20 Million Prewar Apartment on Fifth Avenue Was Sunny von Bülow’s Childhood Home

The 13-room Manhattan duplex, on the market for the first time in 100 years, was later the longtime home of prominent patron of the arts Irene Boyd Roosevelt Aitken. The 13-room Manhattan duplex, on the market for the first time in 100 years, was later the longtime home of prominent patron of the arts Irene Boyd Roosevelt Aitken.