How many countries was inception shot in?

Inception was shot in several countries from different continents all over the world, filming in these places/countries inparticular:

-Tokyo, Japan (where Saito offers the job to Cobb)

-Cardington, England (hotel bar, and the rotating hallway)

-University College London Library

-France (scene where Cobb explains how to create the setting to Ariadne)

-Tangiers (doubled for Mombasa, where Cobb hires Eames and Yusuf)

-Los Angeles, CA, USA (where Cobb first meets Saito in the dream)

-Alberta, Canada (the snow base on the final level of Inception)

Overall, Inception spanned across six countries, sometimes with scenes filmed across mulitple locations in a particular country.