With larger-than-life visuals — like giant dancing robots projected on the 160,000-square-foot interior screen and a futuristic platform levitating each member of the group about 80 feet in the air — and a 1,600 speaker sound system, Rich confessed that the team faced some “challenges” to make the residency come to life.

The boy band's "Into the Millennium" residency extension includes a New Year's Eve performance among seven new dates announced.

Kentuckians Kevin Richardson and Brian Littrell are headed to Las Vegas as part of The Backstreet Boys' "Into the Millennium" residency.