Where was The Old Dark House (1963) filmed?

1963 film by William Castle

The Old Dark House (1963) was filmed in Bray Studios and Oakley Court, 2 places named in its German Wikipedia’s Hintergrund section, in the United Kingdom. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data