This challenge will take place in the former mosque and present- day museum, the Hagia Sophia, in Istanbul, Turkey. Both members of each group will have to solve various riddles that correlate to the museum and history of the Hagia Sophia. After solving each riddle, the group will find another riddle at the answer to their current riddle, until they solve four riddles. Upon solving the fourth riddle, there will be a fifth and final riddle, in which they will find out where to receive their ticket, and thus, complete the challenge.
Check in for this portion of the race is located at the entrance of the Sultan Ahmed Mosque (Blue Mosque) in Istanbul, Turkey.