S.S. Lazio, officially known as Società Sportiva Lazio, is a professional football club based in Rome, Italy. Founded in 1900, the club competes in Serie A, the top tier of Italian football. Lazio's colors are sky blue and white, and they play their home matches at the Stadio Olimpico, which they share with their city rivals, AS Roma. The club has a rich history, having won multiple domestic and international titles, including the Coppa Italia and the UEFA Cup Winners' Cup. Lazio is known for its passionate fan base and has a strong rivalry with AS Roma, known as the "Derby della Capitale."