Do some people-watching at Central Park. If its well-trodden pathways could talk, this historic square would have plenty of stories to tell.
If you like the word "free" as much as most do, you'll be pleased to know this public square is exactly that. Central Park is located in Old Havana. If you want to keep your sightseeing schedule full while you're around these parts, also drop by Malecón, Plaza Vieja and Havana Cathedral.