Futbol Club Barcelona, known familiarly as Barça , is a Catalan sports club based in Barcelona, Spain. It is best known for its football team. It was founded in 1899 by a group of Swiss, English, and Catalan men led by Joan Gamper. The club has become a Catalan institution, hence the motto Més que un club (More than a club). They were founding members of La Liga in 1928, and, together with Real Madrid and Athletic Bilbao, they have never been relegated from the Primera División. The club were also the first La Liga champions and they are the current champions of both Spain and Europe. The club's main stadium is the Camp Nou and the fans of FC Barcelona are known as culers or culés. In September 2006, the number of socis (club members/owners) reached 151,127, while in June 2006 the number of penyes (officially-registered supporter clubs) reached 1782 worldwide.