President Barack Obama's official visit to Cuba this week is the first such trip in nearly 90 years. The last–and only–time a sitting U.S. President visited Cuba was Calvin Coolidge in 1928:
The Cuba Obama's visiting has a reputation as a place frozen in time, but that's not really true. Just look at these images from Cuba in the 1920s.
Read more about Coolidge's visit here: The Only Other Time a Sitting President Visited Cuba