The Diplomat filmed at Steinway Mansion, Astoria. Historic New York mansion whose iconic staircase served as the stairs of 10 Downing Street. On screen it's 10 Downing Street staircase.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? The United States travel atlas covers money, language and getting aroundand everything filmed in Astoria is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Astoria and it tells you what was shot around you, how to get there, and whether you can actually go in.
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