http://en.wikipedia.org/wiki/List_of_tallest_buildings_in_Calgary#Buildings
http://calgaryplus15.com
http://news.buzzbuzzhome.com/2014/04/calgary-from-sky.html
http://www.globalairphotos.com/gallery/AB/Calgary/Core/2012/3
https://www.google.ca/search?q=aerial+view+of+downtown+calgary&es_sm=93&tbm=isch&tbo=u&source=univ&sa=X&ei=206xU9WIB9bAoATi-oGoBA&ved=0CBsQsAQ&biw=1777&bih=887&dpr=0.9
