In the 1950's Cuba was the gem of the Caribbean where the likes of Sinatra and Hemingway hung out in the glamorous casinos and hotels. With the Revolution and embargo, they had no resources to maintain most of the buildings. So the history of the buildings is there, converted to apartments without maintenance or the few that are government museums, offices and hotels that have had some level of maintenance and rehab.
The arial views are from the 9th floor of the old Bacardi Rum building. If you ignore the new buildings, it looked like a post-apocalypse scene. the contrast was unbelievable.