Ponderosa Steakhouse and Bonanza Steakhouse are a chain of buffet/steakhouse restaurants. They are two of the most franchised subsidiaries of Metromedia Restaurant Group. Unlike other chains with two names like Checkers/Rally's, which uses only one of the names in a given region, restaurants in a given region could be named either Bonanza or Ponderosa. This is because Bonanza and Ponderosa were separate companies, which were later merged under Metromedia - so the names overlap depending on who had restaurants where prior to merger. The names of the restaurants are derived from the classic TV series Bonanza, which was set at a place called Ponderosa Ranch.