The Hyde Park performance was outstanding for a few reasons.
Firstly, the atmosphere was electric, with a diverse crowd of fans all singing along to the Backstreet Boys songs.
Secondly, over 60,000 people belted out the group's most famous song, "I Want It That Way" creating a spine-tingling moment.
Finally, when it started raining after the band's performance of "Drowning" instead of dampening spirits, the crowd danced and sang even louder, making for an unforgettable experience.