These vintage images of the 19th century San Francisco skyline vividly portray how the California city by the Bay changed over a few short decades in the 1800s. Take a look back at how the city grew and grew and grew.
When you look back at these old photos of skyscraper construction, you’ll see men way up high without harnesses, walking along beams suspended hundreds of feet above the street, and swinging on cables.
The World Trade Center architect talks about how the towers were originally built, and see a collection of photos taken by visitors to NYC during the months and years before they fell.
Dive back into the past with these 16 views of beautiful San Francisco in the ’70s – from the skyscrapers to the bridges and everything in between.
How high will the skyscraper of the future be? Higher even than the Empire State Building, which towers 1250 feet above the base mark in the center of the curb at Fifth Avenue?
Uncle Sam’s scientists, armed with every known precision test instrument, have set out to answer the much-debated question of “How safe are skyscrapers?”
Do you recognize this New York thoroughfare? No! Then bring a prophetic eye to bear on it This shows part of Seventh Avenue (now dirty,
Economics and conveniences of concrete Concrete is the new medium of the engineering wonder-worker. First, he builds the gaunt steel skeleton of a skyscraper, with