1953 - The famous “four-level” opens in Los Angeles
https://youtu.be/kHORanjPxQc
https://youtu.be/06Bzg6SY7SY
2004 - Construction started on the Burj Khalifa.
https://youtu.be/7T29qk96uAA
https://youtu.be/5kdPgNqp-T0
https://youtu.be/d6b4OmUFt7I
https://youtu.be/edOxBPzwdqA
https://youtu.be/c33VnfbwxAE
2011 - the Myllysilta, a steel girder bridge, opens in Turku, Finland.