Harborview Towers was mentioned as early as the 1980's. This upper end apartment complex is located in downtown Port Charles. It has a view of the lake, and can clearly be seen in the Port Charles skyline. It includes Sam McCall's penthouse and was the previous residence of several Port Charles residents including Sean Donely, Jason Morgan, Carly Spencer, Damian Spinelli and mob boss Sonny Corinthos.
Penthouse #1 and #2 are located on the 15th (top) floor.
The complex was first introduced not long after Sean Donely came to Port Charles and moved into PH #4 in 1985. It was here Sean frequently met with Monica Quartermaine during her affair while married to Alan. In 1986, Sean allows Frisco Jones and Felicia Cummings to celebrate their honeymoon in the penthouse with arabian themed decor. When a mob boss targeted Robert Scorpio and Anna Devane, Sean added a secret panic room for a young Robin Scorpio-Drake, complete with a WSB computer. In 1990, Frisco and Felicia remarry in the penthouse.
After Sean and Tiffany Donely left town in 1995, Sonny bought the penthouse after The Paradise Lounge was closed. He was joined by Stone Cates and Brenda Barrett. Stone (who was dying from AIDS) is cared for by Sonny and Robin in the penthouse until his death. Stone's memorial was also held here. Following Brenda leaving town, Carly Benson and her son Michael eventually join Sonny at the penthouse. It was the penthouse where Sonny and Carly held their first wedding in 2000. They're later joined by their son Morgan after his birth. In 2005, Sonny and his family left the penthouse for Greystone Manor. When Sonny and Carly divorced for the fourth time in 2022, Sonny returned to the Penthouse which is now #564 and he let Carly and the family keep Greystone Manor.
Penthouse #2, which was directly across the hall from Sonny, was first owned by Katherine Bell purchased in 1996. It was later sold to Jason, who in turn gave the place to his cousin, Justus Ward. Justus later moved out and Jason moved back in before leaving town for a few years. In the years Jason was gone Alexis Davis rented PH #2, but Jason remained the owner. He left the PH for Michael Corinthos in a trust that he asked Sonny to manage. By the time Jason returned to town, Alexis had moved out and Jason regained ownership of the PH.
Jason shared Penthouse #2 with Courtney Matthews during their relationship.
In 2004, Jason moved Sam into the Penthouse while she was pregnant with Lila, who was unfortunately stillborn. The room across the hall from the room that was going to be the nursery for Sam's baby, subsequently became Damian Spinelli's room, which was "regrettably pink." He stayed in the room that Brenda lived in while she and Jason were in a marriage of convenience.
Reese Marshall (when dating Sonny) took residence in Sonny's old penthouse #1. While Reese was living there, Carly broke in and vandalized the entire apartment during a mental breakdown. Sam was attacked there by Nico, and Carly helped fight him off.
In 2006, a would-be assassin shot a bullet through the window of Jason's apartment. He leaves the bullet hole in the glass to remind him of the choices he's made. In 2007, Ric Lansing bugged Jason's apartment in order to obtain a guilty plea in the murder or Lorenzo Alcazar.
In a December 2008 episode, it was indicated that the Metro Court Hotel was located directly across from the Harborview Towers.
When Brenda Barrett returned to town in 2010, she briefly lived at Penthouse #2 taking residence back up in her pink room.
Currently Sam lives in Penthouse #2 with Danny and Scout. Jason still legally owns it, but has given it to Sam and the kids. Jason and Sam later broke up to keep the kids safe from the mob life, and Jason moved out.
In early 2022, after Carly caught Sonny cheating on her, she started divorce proceedings, and he agreed to move back into his old penthouse so she could have the manor.
In August 2022, Dante (who is dating Sam) agrees to move into Sam's penthouse with his son Rocco. They move in September 2022.
In January 2023, Spencer moves in with his uncle Sonny. In March 2023, combined with his dislike of Dex and finding the penthouse too crowded, Spencer took up his grandmother's invitation to move back into the Collins Penthouse.
In March 2023, after getting injured following a surprise sniper attack in one of the Corinthos Coffeewarehouses, Sonny has Dex Heller temporarily move into the den while healing and for safety until the anonymous boss is revealed.
In June 2023, believing himself to be his 90s rockstar persona Eddie Maine following a head injury, Ned Quartermaine sneaks out to the The Savoy, in an effort to be around the action and wanting to perform. He meets Nina, Michael, and Sonny (who knew him in the 90s), who mentions investing in a business years ago.. A friend (Ned's ex-wife) who co-ran L&B Records managed a singer who is "living the crazy life" (A reference to Ricky Martin's [ex-Miguel Morez] "Living La Vida Loca"). Eddie doesn't react to hearing about L&B or Lois and shocks the crowd by taking the stage to sing. Unfortunately, he collapses and Sonny offers him a room at his penthouse.
His wifeOlivia Quartermaine showed up at the penthouse the next day, sharing a photo album of his life - including his time as Eddie Maine. He recognized nothing (even Lois Cerullo) except his old guitar. On August 2nd, after making some headway between "Eddie" and the Quartermaines, specifically befriending his son Leo, "Eddie" moves back into the mansion.
During summer 2023, while Laura and Valentin are in Chechnya trying to find Nikolas, Charlotte moves in with Dante and Sam at Harborview Towers, to be near her brother Rocco, and fellow Cassadines, Sam and her children. She moved out when Valentin bought them the Cassadine House in September.
On December 28, 2023, after it is reported that Wyndemere was broken into, Sonny insists that Ava temporarily move into his penthouse, which he knows their daughter Avery will love. She agrees. On New Years Eve, the truth of Nina snitching to the authorities about Carly comes out. Sonny is furious - kicking her out and claiming he never wants to see her again. Nina stays the first night at Sasha's apartment, then stays in her hotel.