Soaring into the clouds like a rocket taking off into the sky, Toronto’s CN Tower dwarfs the city below. Completed in 1976 as a telecommunications tower to aid the construction boom of the 1960s, today it’s also one of the city's major tourist attractions.

At 1,815 feet (553m) high, the celebrated national monument was the tallest free-standing structure in the world until it was surpassed by the Burj Khalifa in 2007.

It remains the tallest free-standing structure in the western hemisphere however and even featured on the cover of Drake’s 2016 album Views from the 6, where the singer is pictured at the top of the tower with his feet dangling over the edge. Photoshop may have been involved...

Incredible skyscrapers that break every rule of design