The Second City

The Second City is an improvisational comedy enterprise. It is the oldest improvisational theater troupe to be continuously based in Chicago, with training programs and live theatres in Toronto and Los Angeles. The Second City Theatre opened on December 16, 1959, and has become one of the most influential and prolific comedy theatres in the English-speaking world. In February 2021, ZMC, a private equity investment firm based in Manhattan, purchased the Second City.The Second City has produced television programs in both Canada and the United States, including SCTV, Second City Presents, and Next Comedy Legend.

Source: Wikipedia