The Sinn FΘin president unveiled a memorial last night in Havana to the 10 republican hunger strikers who died at the Maze prison in 1981.
Mr Gerry Adams has stressed his controversial visit to Cuba enjoyed the backing of most party supporters despite misgivings by some prominent friends in the US and criticism by other parties in the North.
Last night, the American Ambassador to Britain, Mr William Farish, criticised Mr Adams's visit. Speaking in Belfast, where he was delivering a message of support from President Bush to a Christmas peace gathering, he said: "You combine Columbia and September 11 and now the visit to Cuba; it certainly isn't a positive thing."
The long-standing trade embargo between the US and Cuba and the arrest of three suspected IRA men in Colombia in August, one of whom was a Sinn FΘin representative in Havana, prompted one Republican congressmen and Adams supporter, Mr Peter King, to brand the visit a mistake.
Mr Adams said yesterday: "I think our relationship with our friends in the United States and the cause of Ireland are stronger than any possible disagreement, and I would say that not many [SF supporters in the US] will disagree."
Mr Adams met the Cuban president, Mr Fidel Castro, yesterday at a rally in Havana attended by 2,000. The two met informally and shook hands.
Mr Adams said afterwards:
"He [Mr Castro] asked me if we could get information about the hunger strikes, about the struggle in Ireland. He said how much he had been moved by what happened 20 years ago and he said if we could get him information, they would translate it into Spanish and ensure that schoolchildren throughout Cuba will learn about the Irish struggle."
Mr Adams, who is joined on the visit by North Belfast Assembly member Mr Gerry Kelly, is expected to meet his host again today and the Cuban Foreign Minister, Mr Felipe Perez. He is also expected to make a speech at the Cuban Institute of Friendship with Peoples returning to Ireland.