The Detroit Lions are a professional American football team based in Detroit. They compete in the National Football League as a member club of the National Football Conference North division. The team plays its home games at Ford Field in Detroit. Originally based in Portsmouth, Ohio and called the Portsmouth Spartans, the team formally joined the NFL on July 12, 1930 and began play in the 1930 season. Despite success within the NFL, they could not survive in Portsmouth, then the NFL's second smallest city. The team was purchased and relocated to Detroit and subsequently renamed the Lions for the 1934 season. The Lions have won four NFL championships. However, their last was in 1957, which gives the club the second-longest NFL championship drought behind the Arizona Cardinals. They are one of four current teams and the only NFC team to have not yet played in the Super Bowl. They are also the only franchise to have been in operation for all 54 seasons of the Super Bowl era without having appeared in one.