Curse of the Crimson Altar (1968)

When his brother disappears, a man pays a visit to the remote country house he was last heard from and detects a feeling of menace in the air with the legend of a Black Witch hanging over everything.

Konga (1961)

A scientist comes back from Africa after a year, presumed dead, but he came across a way of growing plants and animals to an enormous size and brings back a baby chimpanzee to test out his theory.