The film "The Unholy" was filmed in Massachusetts, USA.

Filming Locations:

Clinton Historical Society Museum - Holder Memorial,

In the movie

Scene where Gerry Fenn participates in a press conference.

In reality

The scene was filmed According to reports from the Clinton Historical Society, the scene should be recognizable to people familiar with the building, as the photographs on the wall were not removed during filming.

Chapel of Martha and Mary

In the movie

Scene where Alice is visited by the Virgin Mary, and she can suddenly hear, speak, and heal the sick.

In reality

The scene was filmed The Chapel of Martha and Mary at the Wayside Inn was named Our Lady of the Assumption for the filming of the horror movie "The Unholy" in March 2020. The Martha-Mary Chapel seats up to 150 guests and was built by Henry Ford in 1940. It has long been recognized as a historic landmark and national treasure and has served as the setting for a perfect New England chapel in many films.