Barack Obama took some time out to do some sightseeing in Egypt after his keynote speech to the Muslim world at Cairo University on Thursday.
The US president visited Cairo's 600-year-old Sultan Hassan mosque and was later taken on a tour of the Giza Pyramids by Zahi Hawass, head of Egypt's antiquities authority.
Interesting fact: The Great Pyramid of Giza is the only wonder of the ancient world still in existence.