Windsor Castle, setting for Season 4 of Netflix series The Diplomat
The Diplomat Season 4: Windsor on Screen, Burghley House Behind the Scenes
Season 4 of The Diplomat, released on 15 October 2026 on Netflix, opens at Windsor Castle. But the royal residence did not host the filming: it was Burghley House that stood in for it.
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Released on 15 October 2026, the eight episodes of Season 4 of The Diplomat open at a location that needs no introduction: Windsor Castle. The first episode is even titled after it. For Netflix’s political drama starring Keri Russell, the country’s oldest still-inhabited royal fortress becomes the stage for a major diplomatic crisis. One detail, however: no cameras entered the real Windsor.
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