Nicknamed the “Green Fairy” for its occasionally milky green color and mythical hallucinogenic effects, absinthe is legal in the U.S. after a 95-year ban. Patrons of Luxor’s new center bar, Liquidity, now can experience the once-forbidden liqueur for themselves. Available for $300, “Absinthe Envy” is served in an elaborate tableside presentation that offers a modern take on the tradition of serving the illicit concoction with a sugar cube and chilled water.