JES:
(risking Hammy's wrath)
Hmmm... one could base one's self in Santa Cruz, CA and travel by car no more than 90 minutes to each of:
Cypress Point
Pebble Beach
Monterey Peninsula CC Shore
MPCC Dunes
Spyglass Hill
Pasatiempo
San Francisco GC
Olympic Club
Then add in two more to make it 10, from a laundry list that includes Spanish Bay, Lake Merced GC, Stanford, Half Moon Bay, The Preserve, California CC, etc. Either that or do multiple rounds at Pebble or Cypress or SFGC or Olympic...
Methinks that competes with Melbourne at the very least.
I'm thinking Long Island competes also...
I'm no expert on London area, but I did mention that (first, before the others, I might add) and I'd have to guess you'd have no problem getting 10 great rounds in there also, given what Doak said here and what others have said before.
Near Philadelphia you've got some incredible heavyweights at the top then fantastic depth below that....
Near LA you have 3-4 real great ones, but I'm not sure about the deptht to get it to 10 (sorry Hammy).
One can easily stay in Edinburgh and drive to:
St. Andrews Old/New/Eden
Carnoustie
Kingsbarns
Muirfield
Gullane No. 1
N. Berwick West
Turnberry
Troon Championship
Prestwick
Western Gailes
Those are all within 90 minutes by car from central Edinburgh.
That's how I see all this anyway - without doing any research and again just off the top of my head, Hammy.
Melbourne area is tough to beat, and would be great for sure... but I'm still not convinced it's No. 1.
TH