My parents, Michael, and I recently returned from a one-week vacation in Cuba. We spent the first three days in Havana and the rest in an all-inclusive resort in Varadero.
While in Havana, we had a local tour-guide, Umberto, drive us around the city. This made it a lot easier to visit almost every tourist attraction there is to see.
It goes without saying that Havana is a photographer's Disneyland. Its old-world charm, preserved in part by the recently-lifted American embargo, is seen in every aspect of Havana life. I wouldn't say that the city is stuck in time; its people are very modern in many ways. But its architecture, the old cars, and the pace of life, gave us glimpses of what it must have been.
For me, the most enjoyable part of taking photos in Havana is the absence of commercial advertisements. There are, of course, political murals and posters, but rarely did I see advertisement, except maybe for Havana Club!