Cristiano Ronaldo grew up on the island of Madeira. As a small boy, he played football in the narrow streets with friends, using shoe-boxes as goals. He left home at twelve, moved to Lisbon to train with a top club called Sporting, and worked harder than almost any player around him. He grew up to score more international goals than anyone in football history.
Portugal's three biggest clubs are Benfica, Sporting CP and FC Porto. Their stadiums are huge, painted in red, green or blue, and on match days the streets nearby fill with fans singing songs. Kids often inherit their club from their parents and grandparents.
Portugal won the European Championship in 2016 - their biggest team trophy ever. The whole country celebrated in the streets, fireworks going off, cars beeping their horns. Many Portuguese will tell you that night was one of the happiest of their lives.
Football in Portugal is not only about famous players. It is about a ball in a square, a goal made of two jumpers, and a game with anyone who wants to join in. That part has not changed for over a hundred years.