Where was The Slender Thread filmed?

1965 film by Sydney Pollack

The Slender Thread (1965) was filmed in Los Angeles, Seattle, Hollywood, Seattle Center and Paramount Pictures Studios, 5 places named in its Wikipedia article, in the United States. 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