What are the most popular locations for open source sprints?

I chanced upon this article "Rest, relaxation and refactoring: 11 great places for a coding vacation | ITworld Rest, relaxation and refactoring: 11 great places for a coding vacation"  and it got me thinking. Personally I liked a few of those, especially monastries (I have never been to one). I recalled that Plone sprints used to happen in exotic places sometimes. I wonder whether there are preferred places for Code Sprints for Open Source Projects.

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