The Sedgewick Hotel is a five star hotel, was the site of the Ghostbusters' first call, and their first captured ghost, Slimer.
The Sedgewick Hotel was revealed to be founded in 1897 A.D. by Godfrey McCallister Sedgewick, a misanthrope turned hotelier. No one was sure why someone who hated people would open a grand hotel. Since them, the Sedgewick has exuded an eerie atmosphere. An inordinate number of guests and staff have met untimely ends due to strange accidents and sometimes foul play. Most of them stay forever, drawn to an inexorable force that traps them in the Sedgewick's many corridors, suites, ballrooms, and service area. The Portrait of G. Sedgewick was commissioned in 1910.
The staff had a history of seeing a green specter on the twelfth floor, but never made any public acknowledgment of the problem. Two weeks later, on that fateful night, however, the disturbances had become too much to ignore. To salvage the ballroom event, the Hotel manager caved in and called the Ghostbusters. The hotel manager called in response to their TV ad citing their services as paranormal investigators. While they cornered Slimer in a ballroom, the manager was trying to keep a rich patron, Mrs. Van Hoffman, at bay as she inquired why the ballroom was locked.
The guys responded punctually, but not very quietly and made quite a scene coming in. The Ghostbusters went to the twelfth floor and performed a successful field test of their equipment by blasting a cart pushed by a Chambermaid. The trio split up. Ray encountered Slimer first and opened fire when he couldn't get in contact with Venkman. Slimer eluded Ray and phased through a wall. It came face to face with Peter and slimed him. Ray rushed to Peter's side. Egon Spengler then radioed them to come down to the first floor and meet him at the Alhambra Ballroom where the ghost headed to. They trapped Slimer but also destroyed the ballroom in the process.