This is a low poly model of the CN Tower in Edmonton, a landmark Modern building completed in 1966.
The STL was converted from a great Sketchup Model created by newfangled, and the original can be found here: https://3dwarehouse.sketchup.com/model/cc1968cac9089cd533a337b6b838f975/CN-Tower
Netfabb Basic was used to repair the model automagically and some manual triangle faces were also flipped into the correct orientation. A more skillful 3D designer may be able to add some of the detail back.
The building has been scaled to roughly 1:400, but still may need further scaling.
More info on the building can be found here: http://capitalmodernedmonton.com/buildings-by-area/downtown/cntower/
Photograph by James Dow.