A psychologist is sent to a space station orbiting a planet called Solaris to investigate the death of a doctor and the mental problems of cosmonauts on the station. He soon discovers that the water on the planet is a type of brain which brings out repressed memories and obsessions.

1975 film by Andrei Tarkovsky

Near a gray and unnamed city is the Zone, a place guarded by barbed wire and soldiers, and where the normal laws of physics are victim to frequent anomalies. A stalker guides two men into the Zone, specifically to an area in which deep-seated desires are granted.

1961 film by Andrei Tarkovsky