<Li> 1989--July 12--The stadium plays host to its first Argos game . </Li> <Li> 1989--July 17--First ever Double header at Skydome and the Jays win both games beating Angels . </Li> <Li> 1989--Jose Canseco hits a home run into the fifth deck of SkyDome, off Toronto Blue Jays' pitcher Mike Flanagan . It is an estimated 480 - foot shot, although one journalist estimated it to be at least 500 feet . </Li> <Li> 1989--The Saskatchewan Roughriders defeat the Hamilton Tiger - Cats 43--40 in the 77th Grey Cup . </Li>

How much money did it take to build the cn tower