Is best shiraz in the world from Barossa Valley?

Hello,
a couple of friends of mine and I have been thinking of taking a trip to Australia this summer and we were hoping to stay in Barossa Valley. We were wondering is best shiraz in the world from this region? Can anyone give me some info on this? Thanks a lot in advance! bye

Hi,
I have stayed in South Australia in Barossa Valley a couple of years ago and I had a great time there. This region is famous in the world by its great wine and especially shiraz or syrah. It is the best wine in my opinion, but there are other regions in the world that are famous by this wine.