In her will, Doris Duke requested that her properties in New Jersey, Hawaii and Rhode Island be opened for public visitation and used for educational programs:
- Duke Farms is a 2,700-acre estate in Hillsborough, New Jersey, that her father created at the turn of the 20th century.
- Shangri La is the home that Doris Duke built in Honolulu, where she paired gorgeous Hawaiian landscapes with a large collection of Islamic art.
- Rough Point is the Duke family mansion in Newport, Rhode Island, which features an extensive collection of European fine and decorative arts.
The properties are owned and managed by operating foundations that receive support from the Doris Duke Charitable Foundation.