U.S. President Barack Obama stands facing out to see, at the 'Door of No Return,' at the slave house on Goree Island, in Dakar, Senegal, Thursday. Obama is calling his visit to a Senegalese island from which Africans were said to have been shipped across the Atlantic Ocean into slavery, a 'very powerful moment.' President Obama was in Dakar Thursday as part of a weeklong trip to Africa, a three-country visit aimed at overcoming disappointment on the continent over the first black U.S. president's lack of personal engagement during his first term. (AP Photo/Rebecca Blackwell)

Question: Have you ever visited Africa? When?