"Obviously, for an African American, an African American president, to be able to visit this site, I think, gives me even greater motivation in terms of human rights around the world," Obama said.

The president and first lady Michelle ObamaMichelle LeVaughn Robinson ObamaAl Sharpton: Royal wedding shows white supremacy is ‘on its last breath' Meghan Markle's pre-royal 'finishing lessons' and an etiquette of equality Place your royal wedding bets: Website offers odds on surprise American guests MORE were observed gazing at the Atlantic Ocean from the Door of No Return, the view seen by slaves as they were loaded onto ships. The first family also toured a former slave house that now stands as a museum.

The first family arrived on the island via a small six-boat flotilla, traveling with Senegalese President Macky Sall.

Speaking with reporters aboard Air Force One on Wednesday, press secretary Jay Carney said the visit to the island would be a "powerful" symbol.

"I'm sure particularly so, given that he is African American," Carney said.

Thursday was the first full day of the president's eight-day trip through Africa, which in addition to Senegal will feature stops in South Africa and Tanzania.