The group launched their Into the Millennium shows with a slew of emotions: "I started breaking down and crying because it was so emotional and surreal."

Preparing for liftoff with Millennium opener “Larger Than Life,” the global stars of our childhood blasted off with a 25-song set, christening Sphere as the first pop act to perform there.

AJ McLean and the group's creative team reveal how they're putting on "probably the most ambitious" show yet as the groundbreaking venue's inaugural pop act.

But, as with every live performance at the Sphere, this was more than a mere concert, it was a thrill ride, and the vibrating haptic seats and nonstop visuals elicited shrieks in their own right.Start the day smarter.

The Backstreet Boys kicked off their “Into The Millennium” summer residency at Las Vegas’ Sphere this weekend, becoming the first pop act to play the cutting-edge venue.