Back in the early 2000s I was obsessed with a book series that I really want my niece to read but I can't remember the title. The stories were about a girl who traveled to other countries in some sort of magical way. In the one I can remember the most she traveled to Australia and there was a man playing a didgeridoo under a tree. I believe that one had "Outback" in the title but I don't know for sure. I also sort of remember another one that took place in Ireland. The girl on the cover had brown hair and was always dressed in an outfit that matched where the story took place.

Any help would be amazing.

There are several books about children going to various countries.  

Ernie Dances to the Didgeridoo and Celeste Sails to Spain are 2 of the other titles.