>>> FINALLY, THE MYSTERY
MAILBOX, BRINGING TOGETHER
STRANGERS IN THE BIG CITY.
>> Reporter: THE MESSAGES ARE
PERSONAL.
>> I HAVE NEVER LOVED ANYONE AS
DEEPLY AS YOU.
>> Reporter: THEY INCLUDE
CONFESSIONS OF REGRET.
>> WOULD HAVE, SHOULD HAVE,
MAYBE NEXT TIME.
>> Reporter: AND HOPE FOR THE
FUTURE.
>> PLEASE BRING US PEACE.
>> Reporter: THIS IS THE UNSENT
LETTER MAILBOX.
A POP UP ART INSTALLATION SOFIA
CALVIN BRINGS AROUND NEW YORK
CITY.
SHE SAYS LIKE MANY, SHE’S
STRUGGLED WITH FEELINGS OF
ISOLATION.
>> IT’S SUCH A UNIQUE EXPERIENCE
OF LIVING AND IT’S INCREDIBLY
What a deal.
What a deal. ISOLATING.
NADIA IS ONE OF HUNDREDS TO JOIN
IN, WRITING A LETTER THAT WOULD
NEVER BE SENT AND READING ONE
FROM A PERSON SHE’S NEVER MET.
>> THEY CONNECT EVERYBODY
TOGETHER.
IT’S JUST A BEAUTIFUL THING.
>> Reporter: FOR SOME, THE
WRITING BRINGS OUT UNEXPECTED
EMOTION.
>> WE’VE HAD A LOT OF HOMELESS
PEOPLE.
WE’VE HAD SUPER RICH, HIGH
FLYING PEOPLE AND THEY WRITE
ABOUT VERY SIMILAR TOPICS.
>> IT’S A STRANGE THING.
UNREQUITED LOVE.
THIS IS WEIRD, BUT I KIND OF
LIKE YOU.
>> Reporter: AND READING
STRANGERS’ SECRETS.
>> I WAS WORRIED HOW YOU WERE
GOING TO RESPOND.
>> Reporter: CAN EVOKE CARE AND
CONCERN.
>> HOPEFULLY WHOEVER READS THIS
HAS THE COURAGE TO SAY HOW THEY
FEEL NEXT TIME.
>> Reporter: HAS THIS MAILBOX
CHANGED YOUR FEELING OF