The Pera Palace Hotel. This Victorian-period hotel still has the same dark wood interior and opulence it would have had when Agatha Christie lived here for several months, writing her "Murder on the Orient Express." You can see the room she wrote the novel in--it's preserved to look just as it did when she used it. You can also see the room used by Mostafa Kamel (better known as "Attaturk"), the first Turkish president who enacted major modernizing measures, from forcing Turks to take a last name, to switching from the Arabic alphabet to a Latin alphabet, to abolishing polygamy.