The Bosnia and Herzegovina 1st League, also known as the Premier League, is the top professional soccer league in Bosnia and Herzegovina. It was established in 1992, following the country's independence from Yugoslavia. The league consists of 12 teams, which compete in a round-robin format, playing each other twice throughout the season. The most successful teams in the league's history include FK Sarajevo, FK Željezničar, and HŠK Zrinjski Mostar. An interesting fact about the league is that it has a strong fan culture, with passionate supporters known for their colorful displays and chants.