Junkopia
One day, at the stroke of evening, on Emeryville beach in San Francisco, where unidentified artists, leave, without anyone knowing, sculptures manufactured with items that have washed ashore from the sea.
Starring Arielle Dombasle
Watch "Junkopia" on Criterion Channel released in 1981. It's a documentary movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.