The nearly 28,000 sq. ft. interior houses 12 bedrooms and 12 baths along with four staff apartments. Many elements of its incredibly rich décor come from older mansions and are of historical importance including 18th century wood paneling, scores of marble fireplaces and a museum-quality ceiling in the enormous dining room by the great French Post-Impressionist painter Henri Rousseau. The lavish interior also boasts massive crystal chandeliers, huge Corinthian columns, gilded moldings and marble floors. Avenue Foch, one of the world’s most expensive and prestigious addresses, is home to many private palaces including those of the Onassis and Rothschild families.