Masonic Temple, Chicago, Ill. - Public domain image. Dry plate negative.

Freemasonry's impact on America is more significant than anything that speculation would hold. A movement that emerged from the Reformation, Freemasonry was the widespread and well-connected organization. It may seem strange for liberal principles to coexist with a secretive society but masonry embraced religious toleration and liberty principles, helping to spread them through the American colonies. In a young America, Masonic ideals flourished. In Boston in 1775, Freemasonic officials who were part of a British garrison granted local freemen of color the right to affiliate as Masons. The African Lodge No. 1. was named after the order's founder, Prince Hall, a freed slave. It represented the first black-led abolitionist movement in American history. One of the greatest symbols of Freemasonry, the eye-and-pyramid of the Great Seal of the United States, is still on the back of the dollar bill. The Great Seal's design was created under the direction of Benjamin Franklin (another Freemason), Thomas Jefferson, and John Adams. Freemasonry principles strengthened America's founding commitment to the individual's pursuit of meaning. Beyond fascination with symbolism and secrecy, this ideal represents Freemasonry's highest contribution to U.S. life. Freemasons rejected a European past in which one overarching authority regulated the exchange of ideas. Washington, a freemason, in a letter to the congregation of a Rhode Island synagogue wrote: "It is now no more that toleration is spoken of as if it was the indulgence of one class of people that another enjoyed the exercise of their inherent natural rights. For happily, the government of the United States, which gives to bigotry no sanction, to persecution no assistance, requires only that they who live under its protection should demean themselves as good citizens..." Freemasonry's most radical idea was the coexistence of different faiths within a single nation.

In 1857 Elisha Otis introduced the safety elevator, allowing easy passenger access to upper floors. A crucial development was also the use of a steel frame instead of stone or brick. An early development in this area was five floors high Oriel Chambers in Liverpool, England. While its height is not considered very impressive today, the world's first skyscraper was the ten-story Home Insurance Building in Chicago, built in 1884–1885. Most early skyscrapers emerged in the land-strapped areas of Chicago and New York City toward the end of the 19th century. In a building like these, a steel frame supported the entire weight of the walls, instead of walls carrying the weight called "Chicago skeleton" construction. 1889 marks the first all-steel framed skyscraper in Chicago, while Louis Sullivan's Wainwright Building in St. Louis, Missouri, 1891, was the first steel-framed building with vertical bands to emphasize the height of the building and is therefore considered by some to be the first true skyscraper. After an early competition between Chicago and New York City for the world's tallest building, New York took the lead by 1895 with the completion of the American Surety Building, leaving New York with the title of the world's tallest building for many years. New York City developers competed among themselves, with successively taller buildings claiming the title of "world's tallest" in the 1920s and early 1930s, culminating with the completion of the Chrysler Building in 1930 and the Empire State Building in 1931, the world's tallest building for forty years.

Chicago or: Chi-Town or Chitown, Chicagoland, The White City, City by the Lake, City of the Big Shoulders, City of Broad Shoulders, City of the Century, The 312, City on the Make, The City That Works, The Big Onion, City in a Garden, Hog-Butcher to the World, Beirut by the Lake, New York Done Right, Illville, I Will City, Paris on the Prairie, Sweet Home, Heart of America, The 773, The Alley Capital of America