The Avengers filmed at Stowe House, Buckingham. Emma Peel is held captive in the grand Marble Saloon and Music Room of this Buckinghamshire house. On screen it's Hallucinogen Hall interior.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? The United Kingdom travel atlas covers money, language and getting aroundand everything filmed in Buckingham is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Buckingham and it tells you what was shot around you, how to get there, and whether you can actually go in.
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