4. A woman from New York finds a hidden apartment behind a mirror
Location: New York’s Roosevelt Island
Year Found: 2021
Approximate Value: $1.9 million* Roosevelt Island Three-Bed Apartment
Samantha Hartsoe, a resident in Roosevelt Island, New York, claims that she could “die” from curiosity after discovering something in her house fit for a horror film. While renovating, Hartsoe discovered that her bathroom mirror concealed a three-bedroom condominium.

New Yorker Finds Hidden Apartment Behind Mirror @Pinterest/The Guardian
It was the frigid drafts that gave her the notion to take down the mirror. She squeezed through the tiny gap behind the mirror and emerged into a spooky area where she discovered an empty water bottle and a mountain of rubbish bags. Everyone has been perplexed by the extra square footage found thus far, even the building administrators who were unaware of the apartment’s existence until Hartsoe discovered it.
