A couple of Hotel Nacional stories, and there are many many more:
“In December 1946 it hosted an infamous mob summit run by Lucky Luciano and Meyer Lansky and attended by Santo Trafficante, Jr., Frank Costello, Albert Anastasia, Vito Genovese and many others. Francis Ford Coppola memorably dramatised the conference in his film The Godfather Part II.”
“There is also a small museum there featuring the 1962 Cuban missile crisis. During the crisis, Fidel Castro and Che Guevara set up their headquarters there to prepare the defense of Havana from aerial attack.”