Chelsea Football Club (also known as The Blues or previously The Pensioners) are an English professional football club based in west London. Founded in 1905, they play in the Premier League and have spent most of their history in the top tier in English football. They have had two broad periods of success, one during the 1960s and early 1970s, and the second from the late 1990s to the present day. Chelsea have won three league titles, three FA Cups, four League Cups and two UEFA Cup Winners' Cups.During the 2005-06 season, they became Premier League champions for the second consecutive year.