Conversation so far:
where does charlie in the chocolate factory live
Charlie Bucket lives on the outskirts of town with his poverty-stricken family.
What is the town that Charlie Bucket lives in?
The location of Wonka's factory in the movie is ambiguous, and designed to look like a cross between UK and USA.

Question: Where was the movie filmed?
Self-contained rewrite: Where was 1971's Willy Wonka and the Chocolate Factory filmed?