The "Get into the Groove" and "Vogue" pop diva concluded her career-spanning Celebration Tour with a bang over the weekend, treating fans in Rio de Janeiro to a free beach concert on Saturday. "This really happened," the singer reminisced in an Instagram video shared Sunday.

Madonna put on a free concert in Rio de Janeiro, turning a stretch of Copacabana beach into an enormous dance floor.

According to this Wikipedia list, Madonna’s show is No. 6 on the all-time list of the most-attended concerts. However, all the concerts ahead of Madonna were part of some larger event/occasion/observation,

Area around Rio de Janeiro beach filled for several blocks as singer closes her Celebration world tour

More than a million people thronged Brazil’s Copacabana beach for a free Madonna concert on Saturday, braving the heat to see the end of her “Celebration” world tour.

Forty years into her legendary career, Madonna played to her largest audience ever with a free concert at Copacabana beach Saturday night in Rio de Janeiro that drew 1.6 million people. The concert was the pop diva's final show of her Celebration Tour,

Madonna performs a free concert at Brazil's Copacabana Beach to a crowd of 1.6 million people who filled the area around the famed beach in Rio de Janeiro for several blocks.

As predicted, Madonna's final concert of her Celebration Tour set a record, with 1.6 million people attending the free show on Rio de Janeiro's Copacabana beach Saturday night. Though annual New Year's Eve concerts on the same beach have drawn larger crowds,

Pop superstar Madonna closed her 'Celebration' tour by playing the biggest show of her career to date with the singer performing in front of an audience of 1.6 million in Rio de Janeiro, Brazil on Saturday night (04.