The Heineken Cup is an annual rugby union tournament that features top club teams from Europe. Established in 1995, it is organized by the European Rugby Champions Cup and includes teams from countries like England, France, Ireland, Italy, Scotland, and Wales. The competition is known for its high level of play and passionate fan base. Teams compete in a pool stage followed by knockout rounds, culminating in a final match to determine the champion. The tournament has gained prestige over the years, showcasing some of the best talent in rugby and contributing to the sport's popularity across Europe.