Steel based structures became very popular in the last century and they managed to take architects’ and engineers’ imagination beyond limits. Here are twelve of the most amazing steel structures ever built by man.

Walt Disney Concert Hall, Los Angeles, USA
Gateway Arch, St. Louis, USA
Brooklyn Bridge, New York City, USA
Basilica of San Sebastian, Manila, Philippines
Tyne Bridge, Newcastle, UK
Willis Tower, Chicago, USA
Sydney Harbor Bridge, Sydney, Australia
U.S. Steel Tower, Pittsburg, USA
The New York Times Building, New York City
Seagram Building, New York City, USA
Tatara Bridge, Japan
Inland Steel Building, Chicago, USA