MEMPHIS, Tenn. — Nearly four decades after Elvis sang his last tune, his legacy got a $45 million boost with the Thursday opening of a major new attraction at his Graceland estate — an entertainment complex that Priscilla Presley says gives “the full gamut” of the King of Rock ‘n’ Roll.

About 200 people streamed into “Elvis Presley’s Memphis” after the late singer’s wife cut a ribbon and allowed fans to see the $45 million complex for the first time.

Resembling an outdoor mall, the 200,000-square-foot campus sits across the street from Graceland, Presley’s longtime home-turned-museum. The complex features a comprehensive Presley exhibit with clothing he wore on stage and guitars he played; a showcase of the cars he owned and used; a soundstage; a theater; two restaurants and retail stores.

“You’re getting the full gamut of who Elvis Presley was,” Priscilla Presley said during an interview after the grand opening. “You’re getting to see and participate a bit in his life and what he enjoyed and what he loved to collect.”

It’s part of a $140 million expansion, which also includes a $90 million, 450-room hotel that opened last year. The complex replaces the aging buildings that have housed Presley-related exhibits for years.

An old, gray, strip-mall style visitor center will be torn down to make room for a greenspace along Elvis Presley Boulevard, the street that runs in front of the house.