Haha, that made me really curious too. I think I found it: http://www.life.com/gallery/44691/image/2659802/vintage-scandinavia-midnight-sun#index/0
Hmmm...closest to the north pole and greenland?
CHICAGO! One of my favorite cities. I grew up in Indiana and used to go all the time. Hopefully it won't be all work once you get there!