Foreign tourists listen to a guide at the Cape Coast Slave Castle in Ghana, July 28, 2019. Cape Coast Castle was used as a slaving post from where slaves were bought and sold and then shipped to the U.S. and other countries. The 400-year anniversary of the first slave boat to arrive in America from Africa has caused a rush of interest in heritage tourism in West Africa, as ancestors go back to ancient sites to delve into a dark and often hidden past. Picture taken july 28, 2019. REUTERS/Siphiwe Sibeko