
Every year for the last decade, Knight Frank has published something called The Wealth Report. I’ve written about it before, but it’s basically a look at “prime property” and global wealth.
As part of the report, they have something called the PIRI 100. It’s their “Prime International Residential Index”, which looks at luxury residential property prices around the world. They generally define “prime property” as being the top 5% of each market according to value.
This year, the top 25 locations in their PIRI 100 are as follows (for the most part, the data is up to December 2015):

