Cuba visits change US tourists' hearts and minds
4 February 2014 Last updated at 04:30 GMT
Tens of thousands of American tourists are flocking to Cuba under a US scheme to promote a positive view of democracy and the free market.
US President Obama reinstated the "people-to-people" programme in 2011, which encouraged visits - licensed by the US Treasury - with the hope that Americans would act as unofficial ambassadors.
But a survey has shown that it is Americans whose views of Cuba and US policy towards it which are changing.
Sarah Rainsford reports from Havana.