Mark Ridley's Comedy Castle is a long-running and renowned comedy club that first opened in 1979 and is recognized as Michigan's oldest operating comedy club. It has hosted legendary acts such as Tim Allen, Jerry Seinfeld, Ellen DeGeneres, Jim Carrey, and Jay Leno. The club created the now-standard three comic set format (emcee, feature, headliner). It seats 400 and is known for its intimate setting and hosting nationally recognized comedians.