10 Horror Films Set in Mental Hospitals, Full of Haunting Psychological Terror

Kapanlagi.com - Mental hospitals always have a unique appeal for horror genre lovers due to their quiet atmosphere, endless long corridors, and the mysterious stories of patients. It's no wonder that many filmmakers around the world, including Indonesia, choose this location as the main stage to build tension through works titled horror films set in mental hospitals that depict both real and fictional chilling stories.

Some titles are even taken from original buildings believed to be haunted, making the fear feel more ingrained in the minds of the audience.

From classic Hollywood productions to Indonesian films that have just premiered in theaters this year, the following list summarizes the titles that are most worthy of being on the watchlist of psychological horror fans. Each film has a unique story, ranging from found footage that feels real to psychological dramas that make the audience doubt the sanity of the main character. Here is the list of horror films set in mental hospitals,

1. 402 Haunted Hospitals in Korea (2026)

402 Haunted Hospitals Korea /IMDb

402 Haunted Hospitals in Korea is the latest Indonesian horror film directed by Anggy Umbara, officially released in theaters in July 2026. This film is an official remake of the popular South Korean horror, Gonjiam: Haunted Asylum, but re-packaged from the perspective of Indonesian content creators. The story follows five horror YouTubers who daringly live stream from an abandoned mental hospital named Yongwon Hospital in South Korea.

In pursuit of a target of three million viewers, these five content creators enter a building known for its hauntings and filled with urban legends. The main focus of the story is Room 402, a mysterious room that allegedly has never been opened since the hospital closed decades ago. The deeper they explore, the more real the terror becomes, targeting each member of the live streaming team one by one.

This film attracts the attention of Indonesian audiences as it brings to light an urban legend that has already gained popularity through its Korean version. The storytelling style, which aligns with current trends in paranormal content on social media, makes this film feel relevant to the viewing habits of today's youth. Since it has just been released, this film becomes one of the freshest recommendations for those seeking horror films set in mental hospitals with a local touch.

2. Unsane (2018)

Unsane/IMDb

Unsane is a psychological thriller film directed by Steven Soderbergh, starring Claire Foy as the main character. Uniquely, the entire film is shot using an iPhone camera, resulting in a raw and personal visual atmosphere. The story centers around a woman who accidentally gets trapped in a mental hospital after mistakenly signing an administrative document.

No staff or doctor believes that the main character is actually sane and that she is merely a victim of a system error. Her greatest fear does not come from a ghostly figure, but from the feeling of losing complete control over her own life. The situation becomes more complicated when she suspects that the figure who has been tormenting her for a long time is actually within the same hospital.

This film offers a different approach to horror as it emphasizes psychological tension rather than excessive jump scares. The audience is invited to experience the panic of a patient trapped in a cold and unsupportive hospital bureaucracy. Unsane is suitable for those who enjoy realistic horror without excessive supernatural elements.

3. Gonjiam: Haunted Asylum (2018)

Gonjiam: Haunted Asylum ?IMDb

Gonjiam: Haunted Asylum is a South Korean horror film directed by Jung Bum-shik that raises the urban legend surrounding the Gonjiam psychiatric hospital, which indeed once stood in the Gyeonggi-do area. This hospital was built in 1982 and mysteriously closed in July 1996 after reports circulated that many patients died under unusual circumstances. The film uses a found footage format that follows a group of young content creators exploring the abandoned building for paranormal content.

They conduct a live broadcast while opening one room after another inside the hospital, including the legendary room number 402, which is believed to have never been opened by anyone. The eerie atmosphere is slowly built through the characteristic shaky images of found footage that make the audience feel as if they are present at the location. The tension peaks as team members begin to disappear one by one and experience events beyond rational understanding.

This film has become one of the most popular South Korean horror films of all time and has inspired many remakes, including an Indonesian version set to be released in 2026. Its directorial style is considered successful in creating a real sense of fear because it is based on a location and a story believed to have truly happened. For Indonesian viewers, this film is a must-watch reference before watching the local remake version.

4. Eloise (2016)

Eloise/IMDb

Eloise tells a story inspired by the Eloise Mental Hospital, a real psychiatric hospital that once operated in Cook County, Illinois, United States. The film follows an heir who must explore the abandoned hospital building in search of her late father's hidden will. She is accompanied by a team of ghost hunters who unexpectedly lead them into terror.

During their exploration, they uncover the dark history of the institution, from controversial medical practices to the mysterious deaths of patients in the past. Each room they enter holds pieces of a story that slowly reveals the horrifying truth about the hospital. The tension is built through a combination of exploring haunted locations and unresolved family mysteries.

This film is intriguing because it highlights the true history of American mental institutions that are known to have a dark record in their time. The combination of supernatural horror and family drama makes this film feel more personal compared to other psychiatric hospital horror films. Eloise is suitable for viewers who enjoy horror with a strong historical background.

5. The Void (2016)

The Void/IMDb

The Void is a Canadian horror film directed by Jeremy Gillespie and Steven Kostanski that combines elements of body horror with cosmic horror set in a hospital. The story begins when a police officer brings an injured victim to a nearly empty small hospital at night. The hospital turns out to be surrounded by a group of cloaked figures with hidden malevolent intentions.

The situation becomes increasingly terrifying as the remaining patients and staff begin to undergo horrifying transformations due to the dark forces that have taken over the building. The hospital, which should have been a place of refuge, instead transforms into a battleground for survival against a supernatural entity. The practical effects used in this film make every horror scene feel real and disturbing.

This film has been praised for reviving the horror style of the 1980s with physical effects without overly relying on CGI. The claustrophobic atmosphere inside the besieged hospital adds to the tension throughout the film. The Void is suitable for viewers looking for a horror film set in a mental hospital with a touch of science fiction and unique monsters.

6. Stonehearst Asylum (2014)

Stonehearst Asylum/IMDb

Stonehearst Asylum is directed by Brad Anderson and adapted from a short story by Edgar Allan Poe titled "The System of Doctor Tarr and Professor Fether." The film stars Kate Beckinsale, Michael Caine, and Ben Kingsley in a tale of a young doctor who comes to work at a remote asylum in the English countryside. From the moment of his arrival, he senses that something is amiss with the way the institution is run.

Slowly he realizes that the boundary between the medical staff and the patients at the hospital is not as simple as it seems. Dark secrets begin to unravel as he digs deeper into the unusual treatment methods applied to its inhabitants. Tension is built through clever dialogue and psychological mystery that keeps the audience guessing who is truly sane within the institution.

This film stands out for the quality of its experienced cast and the detailed, atmospheric classic period setting. The gothic touch in its production design adds a chilling effect despite the minimal explicit violence. Stonehearst Asylum is suitable for viewers who enjoy slow-paced psychological horror filled with narrative surprises.

7. Grave Encounters (2011)

Grave Encounters/IMDb

Grave Encounters is a Canadian found footage horror film that tells the story of a ghost hunting television crew who daringly locks themselves inside an abandoned asylum overnight. Their goal is to prove the existence of supernatural beings in order to boost the ratings of their show, which has long been considered staged by viewers. Once the main door is locked, they begin to realize that the asylum is much larger and more terrifying than they had imagined.

The hallways they explore seem to have no end and continuously change every time they return to the same point. One by one, crew members start to be terrorized by a ghostly figure that appears to be from the former patients of the asylum. The sense of panic and confusion escalates as they can no longer distinguish the actual exit.

The found footage style of this film is considered successful in delivering a realistic tension typical of low-budget horror productions but effective. The twist at the end of the film is also widely discussed as it alters the audience's overall understanding of the story that has been built since the beginning. Grave Encounters is suitable for fans of found footage horror who enjoy the maze-like puzzles of an asylum.

8. The Ward (2010)

The Ward/IMDb

The Ward is a work by legendary horror director John Carpenter, featuring Amber Heard as the lead actress, set in 1966 in the United States. The story centers around a young woman who is treated in a psychiatric ward after being found in a confused state without a clear explanation. From the moment she arrives, she begins to experience strange occurrences that gradually threaten her life.

She realizes that one by one, the other patients in the ward are mysteriously disappearing without anyone being able to explain where they went. The terror she experiences blurs the line between reality and hallucination as the story progresses. The claustrophobic atmosphere within the closed ward adds to the sense of entrapment felt by the main character throughout the film.

This film combines elements of supernatural horror with psychological mystery, characteristic of John Carpenter's directing style filled with tension. Amber Heard's performance is also a highlight, as she convincingly portrays the emotions of fear and confusion of her character. The Ward is perfect for fans of classic horror with a surprising twist ending.

9. Shutter Island (2010)

Shutter Island (2010). [IMDb]

Shutter Island is directed by Martin Scorsese, with Leonardo DiCaprio playing the role of a United States Marshal assigned to investigate the disappearance of a patient from a high-security criminal psychiatric hospital. The hospital is located on a remote island that is difficult to access, adding to the sense of isolation throughout the story. The investigation, which initially seems straightforward, gradually evolves into a mystery that is far more complex than initially suspected.

During the investigation, the main character begins to be haunted by flashbacks of his own past that seem closely related to the case he is handling. Every clue he uncovers only serves to blur the line between reality and the delusions he is experiencing. The cold atmosphere of the hospital, filled with strict rules, adds to the sense of wariness and suspicion towards every staff member he encounters.

This film is widely known for its ending twist that completely alters the audience's understanding of the entire story from the beginning. The dark cinematography and haunting musical score further enhance the psychological atmosphere characteristic of Martin Scorsese. Shutter Island has become a must-reference for those seeking horror films set in psychiatric hospitals with top-notch production quality.

10. Session 9 (2001)

Session 9/IMDb

Session 9 is directed by Brad Anderson and was filmed at Danvers State Hospital, a real psychiatric hospital that once stood in Massachusetts, United States. The story follows a group of asbestos cleaning workers assigned to clean the long-abandoned hospital building. While working, they discover tape recordings of therapy sessions belonging to one of the former patients, which contain horrifying stories.

The more they listen to the contents of the recordings, the more the dark history of the institution and the severe mental disturbances experienced by its patients are revealed. The heavy pressure of the job, along with the eerie atmosphere of the building, gradually affects the mental condition of the workers themselves. The relationships among the crew begin to deteriorate, triggering a series of inexplicable events that are difficult to explain logically.

This film is praised for successfully building psychological horror without relying heavily on jump scares, but rather through the authentic atmosphere of the old building. The filming location, which uses a real psychiatric hospital, adds a sense of reality to every scene presented. Session 9 has become one of the most respected horror films set in a psychiatric hospital among fans of classic psychological horror.

11. Questions and Answers About Horror Films Set in Mental Hospitals

Why are mental hospitals often used as settings for horror films?

Mental hospitals have a quiet atmosphere, long corridors, isolation rooms, and mysterious patient stories, making them very effective for building tension. Many old mental hospital buildings also have dark histories in the real world, such as Danvers State Hospital and Eloise Mental Hospital, which makes fictional stories feel more convincing. The combination of medical, psychological, and supernatural elements makes the setting of mental hospitals a popular choice for horror filmmakers in various countries.

Are there Indonesian horror films set in mental hospitals?

Yes, one example is 402 Rumah Sakit Angker Korea, which premiered in 2026 and is an official remake of the South Korean film Gonjiam: Haunted Asylum. This film tells the story of Indonesian content creators exploring an abandoned mental hospital in South Korea for live-streaming content. The presence of such films shows that Indonesian audiences are also interested in creepy stories themed around mental institutions.

Which mental hospital horror film is most suitable for beginners?

For viewers who are just starting to enjoy this genre, films like Shutter Island or The Ward can be good starting choices because their storylines are clear and not too heavy visually. Both films rely on psychological mystery and plot twists rather than excessive graphic violence. Once accustomed, viewers can move on to more intense titles like Session 9 or Grave Encounters.

What is the difference between horror set in mental hospitals and general hospital horror?

Films set in mental hospitals usually emphasize psychological horror, mental disorders, and supernatural mysteries related to the patients. Meanwhile, films set in general hospitals more often raise medical themes such as illegal experiments, disease outbreaks, or criminal incidents in patient care environments. This difference in story focus is what makes these two subgenres have distinct appeal and ways of building tension.

Are horror films set in mental hospitals always based on true stories?

Not always, but quite a few titles are inspired by locations or urban legends believed to be true, such as Gonjiam: Haunted Asylum, Session 9, and Eloise. Other films like The Void or Stonehearst Asylum are entirely fictional but still utilize the dark imagery of mental hospitals as a story backdrop. Whether based on true stories or pure fiction, both are equally effective in evoking fear in the audience.

(kpl/ibr)