LaLiga is the top professional football league in Spain, featuring 20 teams that compete annually. Established in 1929, it is known for its high level of competition and has produced some of the world's best players and clubs, including FC Barcelona and Real Madrid. The league operates on a system of promotion and relegation with the Segunda División, the second tier of Spanish football. Each season, teams play 38 matches, facing each opponent twice, once at home and once away. The team with the most points at the end of the season is crowned the champion.