Millwall Football Club, founded in 1885, is a professional football club based in South London, England. The team plays its home matches at The Den, known for its passionate and often intense atmosphere. Millwall has a storied history, particularly known for its loyal fan base and reputation for its gritty, resilient style of play. The club has seen varying levels of success, including stints in the top tiers of English football, with notable achievements such as reaching the FA Cup Final in 2004. Millwall is also recognized for its fierce rivalries, particularly with clubs like West Ham United and Chelsea, contributing to its strong identity with English football culture.