1932- the Honoré Mercier Bridge, a truss bridge in Quebec, Canada, opens.
1675- Construction started on St. Paul’s Cathedral in London, England.
https://youtu.be/WvIIDoC73yY
1954- the Danube Bridge, a steel truss bridge, opens connecting Bulgaria and Romania.
https://youtu.be/tcvcvkdi0sE
https://youtu.be/RbFeDz_3k8o