The Greatest Place In The World To Play

We've been talking about great golf courses, great places to play, I was reading an article on greatest sports venues of all time and two legendary golf courses are on the list.  Augusta National and St. Andrews.  I don't know anyone with the kind of clout required to play Augusta, but I do know a few who have played St. Andrews.  Any thoughts...ever been to Madison Square Garden?  How about Fenway Park.   What are your best sports arenas?