I was thinking of Spain too. I went to a conference in Madrid last year and was pleasantly surprised by how many people there were from Spanish-speaking Latin America, far more than I usually see at conferences. At the same time, it's easy enough to get to for most of Europe and not too far from North America either.

Then again, I'm sure it's a nightmare for people from Oceania. Our planet is really inconvenient in that regard, what with being round and all…

Unfortunately for me, being in New Zealand, Spain is literally as far away as you can get.

Sorry, I was thinking global weighted average.

Agree. Barcelona has huge hotel and conference infrastructure (plus easy to fly to directly from most places or connect via Madrid).