Jay Kriegel passed away Thursday after a lifetime of making an impact in media, politics and real estate here in the city.
Kriegel first came on the scene at the age of 25 as a top aide to former Mayor John Lindsay.
Over the years, he helped create the first Civilian Complaint Review Board for the NYPD, and led the city's campaign to host the 2012 Olympic Games.
He went on to be the co-founder and publisher of "The American Lawyer" magazine, and a vice president at CBS.
In 2007, Kriegel got involved in the development of the Hudson Yards project.
Mayor De Blasio tweeted after his passing, saying the city is, "a better place because Jay Kriegel was here to lead, mentor, support and inspire every step of the way."
Kriegel was 79 years old.