<P> The Hangover was released on June 5, 2009, and was a critical and commercial success . The film became the tenth - highest - grossing film of 2009, with a worldwide gross of over $467 million . The film won the Golden Globe Award for Best Motion Picture--Musical or Comedy, and received multiple other accolades . It is the tenth - highest - grossing worldwide film of 2009, as well as the second - highest - grossing R - rated comedy ever in the United States, surpassing a record previously held by Beverly Hills Cop for almost 25 years . It is the sixth - highest - grossing R - rated film in the U.S., behind The Passion of the Christ, The Matrix Reloaded, American Sniper, It, and Deadpool . </P> <P> A sequel, The Hangover Part II, was released on May 26, 2011, and a third and final installment, The Hangover Part III, was released on May 23, 2013, though both films never received the same reception as their predecessor . </P> <P> To celebrate his upcoming marriage to Tracy Garner, Doug Billings travels to Las Vegas with his best friends Phil Wenneck, Stuart "Stu" Price, and Tracy's brother Alan, in Doug's future father - in - law Sid's vintage Mercedes - Benz W111 . They spend the night at Caesars Palace, where they relax in their hotel suite before celebrating with a few drinks on the hotel rooftop . The next morning, Phil, Stu, and Alan awaken to find they have no memory of the previous night, and Doug is nowhere to be found . Stu's tooth is in Alan's pocket, their suite is in a state of complete disarray, a tiger is in their bathroom, a chicken is in their living room, and a baby is in the closet, whom Alan names "Carlos". They see Doug's mattress impaled on a statue outside of Caesars Palace and when they ask for their Mercedes, the valet delivers an LVPD police cruiser . </P> <P> Using clues to retrace their steps, the trio travel to a hospital where they discover they were drugged with Rohypnol ("roofies"), causing their memory loss, and that they came to the hospital from a chapel . At the chapel, they learn that Stu married a stripper named Jade, despite being in a long - term relationship with his abusive, domineering girlfriend Melissa . Outside the chapel, the trio is attacked by gangsters saying they are looking for someone . They flee and visit Jade, discovering that she is the mother of the baby, whose real name is Tyler . They are then arrested by the police for stealing the police cruiser . After being told that the Mercedes has been impounded, the trio is released when they unknowingly volunteer to be targets for a taser demonstration . While driving the Mercedes, they discover a naked Chinese man named Leslie Chow in the trunk . Chow jumps out of the trunk, beats the trio up with a crowbar and flees . Alan confesses that he drugged their drinks to ensure they had a good night, believing the drug to be ecstasy . </P>

What las vegas hotel was in the hangover