The Mario Merola Building is a 12-story Art Deco style building constructed in 1934. In addition to its function as a courthouse, the building also houses all of the borough municipal offices since the Bronx Borough Hall was demolished in 1969.
Gates oversees the trial of Angela Markham and learns about the kidnapping of his son in episode 1x05 “Judgement”.
Root tries to leave town with Finch but she is stopped by Reese in episode 2x02 “Bad Code”.
Source: Person of Interest — Wikia
Finch attends jury duty at the behest of the machine in episode 4x14 “Guilty”.
Captain Mathison is put on trial for her role in the plane crash in episode 1x02 “The Woman in 8D”. Bull and Liberty arrive for jury selection but Bull finds himself cut off from his team when the judge bans phones from the courtroom in episode 1x06 “Bedside Manner”.
