Carnival of Souls (1962).
I suppose you could call this the “Blair Witch Project” of its time — a low budget, independently-produced film that cranks up the spook factor. Except “Carnival of Souls” is much scarier. A young woman (Candice Hilligoss) mysteriously survives a watery car crash and begins having strange experiences. To say much more would be giving too much away.
Even with so many of the filmmaking “seams” showing (not to mention that some of the best shocks have been ripped off countless times over the years), the imagery will stay with you for a long time. Creeeeeeepy. We dare you to watch it alone!
The “carnival” of the title is an abandoned amusement park located on a dried-up shore of the Great Salt Lake in Utah. Director Herk Harvey first noticed the building on a cross-country driving trip and was so taken by the desolation that he and friend John Clifford wrote a script around it, and eventually got permission to film there.
“The Haunting” (1963) and “Lost Highway” (1997).
Take a Look:
And you can see the whole thing over at the Internet Moving Picture Archive.