Here's what the CN Tower was intended for, before the glass floor and EdgeWalk

Despite its current status as a tourist attraction, the CN Tower's practical beginnings was to be a telecommunication tower to help with Toronto's construction boom in the 1960s.
Despite its current status as a tourist attraction, the CN Tower's practical beginnings was to be a telecommunication tower to help with Toronto's construction boom in the 1960s.

CN Tower - Wikipedia

Iranian-Canadian engineers changing Canada through innovation

History CN Tower

CN Tower EdgeWalk: Living on the Edge

File:EdgeWalk on the CN Tower.jpg - Wikipedia

CN Tower Fast Facts

CN Tower EdgeWalk - Walking on the World's Highest Sky Walk

How many died building the CN Tower? - Quora

Craft Knife: We Went To Canada, and I Did the CN Tower Edgewalk