![Glasgow Science Centre and Glasgow Tower, the tallest freestanding building in Scotland Stock Photo - Alamy Glasgow Science Centre and Glasgow Tower, the tallest freestanding building in Scotland Stock Photo - Alamy](https://c8.alamy.com/comp/BREC4A/glasgow-science-centre-and-glasgow-tower-the-tallest-freestanding-BREC4A.jpg)
Glasgow Science Centre and Glasgow Tower, the tallest freestanding building in Scotland Stock Photo - Alamy
![The CN Tower in Toronto, Canada. The tower was completed in 1976 and at the time was the world's tallest free standing structure Stock Photo - Alamy The CN Tower in Toronto, Canada. The tower was completed in 1976 and at the time was the world's tallest free standing structure Stock Photo - Alamy](https://c8.alamy.com/comp/T6M69A/the-cn-tower-in-toronto-canada-the-tower-was-completed-in-1976-and-at-the-time-was-the-worlds-tallest-free-standing-structure-T6M69A.jpg)
The CN Tower in Toronto, Canada. The tower was completed in 1976 and at the time was the world's tallest free standing structure Stock Photo - Alamy
![A Woman is Looking at the Tallest Freestanding Building in the World, the Burj Khalifa in Dubai Editorial Photo - Image of city, dubai: 160383871 A Woman is Looking at the Tallest Freestanding Building in the World, the Burj Khalifa in Dubai Editorial Photo - Image of city, dubai: 160383871](https://thumbs.dreamstime.com/z/woman-looking-tallest-freestanding-building-world-burj-khalifa-dubai-breathtaking-view-160383871.jpg)