Final Mystery Class!

Fairy and I finished our Mystery Class charts and worked on the final clues this morning.
We made a couple of changes, but we were pleased to see that many of our guesses were very close or right on! I am adding a link to the Wikipedia page for each of these locations.
Here is the final list for the 10 Mystery Classes, the city name is first, then region and country:

Mystery Class #1 : Sapporo, Hokkaido Prefecture, Japan
Mystery Class #2 : Johannesburg, Gauteng Province, South Africa
Mystery Class #3 : Pigeon, Michigan, USA
Mystery Class #4 : Campina Grande, Paraiba, Brazil
Mystery Class #5 : Ny-Alesund, Svalbard, Norway
Mystery Class #6 : Kuwait City, Kuwait
Mystery Class #7 : Rothera Point, Adelaide Island, Antarctic
Mystery Class #8 : Bonn, North Rhine-Westphalia, Germany
Mystery Class #9 : Chengdu, Sichuan Province, China
Mystery Class #10: Lima, Lima Province, Peru

We will be entering our answers to this contest by April 25. We will find out on May 2 if we were correct when the sites are revealed!