Why is another country so different in feeling than the one you came from? It is probably because of the infinity factor. Every person is unique and all the habits we acquire are unique too and so add that all together and you get a group of people that are around you that totally influence you and that group develops a group think and thus a culture is born.
It is good to go travel and get a fresh perspective on how many ways there are to do things. You might not have thought of something because you are thinking down the same old paths. new paths are great. You stay yourself, but it adds a new dimension to your work.