Where was Attack of the Giant Leeches filmed?

1959 film by Bernard L. Kowalski

Attack of the Giant Leeches (1959) was filmed in Los Angeles and Los Angeles County Arboretum and Botanic Garden, 2 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