The CN TOWER

The CN Tower is the world tallest tower at 553.33m (1,815ft, 5 in) tall or the equivalent of 5 1/2 football fields stacked end-to-end.
It was built in the 1960's and it's prime function of the Tower was to be a telecommunications hub for several Canadian radio and television channels that broadcast from there. As well, you have a view of Union Station, the main train station that connects everything from the TTC subway, the GO train, VIA rail, to the bus station.