In overcrowded Central Havana and in the historic quarter, the shortage of places to live and play and find much-needed privacy pushed the city upward, spilling onto the rooftops.The technical term for it is 'parasitic architecture.' The Cuban government doesn’t encourage the practice, but in the city’s oldest and most dilapidated neighborhoods, longtime roof-dwelling families...were usually allowed to stay. The parasites became permanent. — The Washington Post
Havana's rooftop-dwelling communities brace for more change -- at least in tourism -- in the bustling city below, as Cuba and the U.S. re-establish relations.