It is argued by some that tourists and sightseers from other countries, as compared to local, have to pay more, when they are visiting any touristic or culturally significant place on foreign lands. From my perspective, this assumption would be counterproductive to the tourism industry because it would create resentment in visitors from abroad, and the fact that museums and other cultural places are the common heritage of the human beings.
One compelling argument against this approach is that visitors from other countries would assume that the host country is robbing them. By charging more, it would augment the idea that they are differentiating among them, and taking advantage of their visits to fill their coffers. Thereby, they might start avoiding to visit those countries and places, that leads to detrimental effects on local economy. For instance, when Maldives imposed a high tariff on international tourists, people boycotted it and prefer to visit other scenic destinations.
Another reason would be cultural places and buildings are our common inheritance. All humans reserve the rights to visit them without any special treatment or privileges, and any discrimination based on cast, creed and nationality is against this universally accepted principle. Consequently, sate authorities are morally and ethically dutybound to avoid any such idea of collecting a high ticket fee from foreign nationals.
In conclusion, while some people advocate that non native visitors ought to be charged more for visiting touristic or cultural spots, I completely disagree with this proposition. It is because these places are not only our common inheritance but can also alienate tourists.