Argo
Although the plot of Argo took place in Tehran, Iran, the entire film was actually shot between Los Angeles and Istanbul, Turkey. When Argo was filmed, there was no way for an American film team to enter an active warzone in Iran to shoot for a couple of weeks and leave unscathed, so they opted to shoot in places like the Istanbul Grand Bazaar and the Hagia Sophia Mosque instead of some of the extremely ornate buildings that are actually in Tehran. These places are just regular, everyday tourist traps, and you can go into both of them free of charge.