Suffolk Theater 118 E Main St, Riverhead, NY11901 Suffolk Theater is a historical, 600 seat art deco theater that was opened in 1933. The newly renovated theater offers a…More variety of performances in the cinema/playhouse tradition. It hosts programming for all ages, including live music, plays, entertainers, movies and catered affairs. The facility includes a cabaret style theater, two bars and a restaurant. Tickets can be purchased online for upcoming events.