10. Hempstead House

Hempstead House dining room as seen on The Gilded Age
Photograph by Barbara Nitke/HBO

The Duke of Buckingham comes in episode 4. The first dinner scene with the Duke was shot at Hempstead House on Long Island. As location manager Lauri Pitkus explained on The Gilded Age Podcast, the crew put up panels to section-off the mansion’s large atrium and create a separate dining area. This setup allowed Mrs. Russell to sneak off and switch the place cards, ensuring that she, instead of Mrs. Winterton, was seated next to the Duke at dinner. Hempstead House is also the location of George Russell’s office.