The Monaco Tower at the Riviera Hotel and Casino crumbles to the ground Tuesday during a controlled demolition. The casino opened in 1955 and was closed last year.

LAS VEGAS — The Riviera Hotel and Casino — the Las Vegas Strip’s first high-rise that was as famous for its ties to organized crime as its Hollywood personification of Sin City’s mobster past — exited the scene early Tuesday with a cinematic implosion.

A series of explosions demolished the 24-story Monaco Tower around 2:30 a.m., with the building crumbling from the sides and then into the middle, kicking up a mountain of dust. A fireworks display erupted moments before the demolition.

“The Riv” closed in May 2015 after 60 years on the northern end of the Strip. The shuttered casino’s owners, the Las Vegas Convention and Visitors Authority, spent $42 million to level the 13-building property.

Officials said the Monte Carlo Tower will be imploded in August. The tourism agency bought the 2,075-room property that spans 26 acres last year for $182.5 million, plus $8.5 million in related transaction costs, with plans to expand its Las Vegas Convention Center.

The Riviera’s implosion marks the latest kiss goodbye to what’s left of the relics of Vegas’ mobster past.