Elsa, we can, and do, travel anywhere. But in itself that'll do nothing for advancing one's photography. In fact coming to an unknown country and culture can easily mean you will be standing alienated on the outside and occupy the vantage point of a detached observer. Just like most tourist do.
It's much better to return to the same country (perhaps, even to the same area) to build your own connections and to better understand the potential for getting the images you envision. Familiarity is the operational key word here.
My parents visited Moscow on many occasions, even in the earlier times when the city wasn't a tourist attraction due to the Iron Curtain. Some day I might follow in their wake. Probably need to pick up some knowledge of the Russian language first.
