General Hospital was created by Frank and Doris Hursley and premiered on April 1, 1963. The first stories were mainly set on the seventh floor of General Hospital, in an unnamed midsize Eastern city (the name of the city, Port Charles, would not be mentioned until the late 1970s).
General Hospital was the second soap to air on ABC (after the short-lived Road to Reality, which aired for several months during the 1960–61 season). In the 1970s, the city was named Port Charles, New York. The series was expanded from 30 minutes to 45 minutes on July 26, 1976, and then to a full hour on January 16, 1978.
It rose to the top of the ratings in the early 1980s in part thanks to the monumentally popular "supercouple" Luke and Laura, whose 1981 wedding brought in 30 million viewers and remains the highest-rated hour in American soap opera history.The soap opera is also known for its high-profile celebrity guest stars who have included, among others, Roseanne Barr, James Franco and Elizabeth Taylor.
In 2007, the program was listed as one of Time magazine's "100 Best TV Shows of All-TIME". On April 23, 2009, General Hospital began broadcasting in high-definition television, making it the first ABC soap opera to make such a transition. The serial aired its 14,000th episode on February 23, 2018.
General Hospital became the oldest American soap opera on September 17, 2010, following the final broadcast of CBS' As the World Turns. On April 14, 2011, ABC announced the cancellation of both All My Children and One Life to Live, leaving General Hospital as the last remaining soap opera airing on the network after January 13, 2012.The show celebrated its 50th anniversary on April 1, 2013.
According to en.wikipedia