Gran Hermano is a reality television show based on the original Dutch format Big Brother. Contestants, known as housemates, live together in a specially designed house while being monitored by cameras 24/7. They compete in various challenges and face weekly evictions, with the last remaining contestant winning a cash prize. The show first premiered in Spain in 2000 and has since been adapted in many countries worldwide. Each version features unique twists and themes, but the core concept remains the same: to observe social dynamics and interactions among the participants in a confined environment.