The U.S. Steel Tower, once known as the USX Tower and sometimes referred to as the Steel Building, has 64 floors and stands approximately 841 feet tall. Located in Pittsburgh, it was the first building constructed with liquid-fireproofed columns and was the largest U.S. tower outside of Chicago and New York upon its completion in 1970.
Construction on the Chrysler Building began in September 1928 and finished in May 1930. The building, located in New York City, was the largest skyscraper upon its completion at 1,046 feet, until the following year, when the Empire State Building exceeded this height.
German engineer Ludwig Mies van der Rohe and American engineer Philip Cortelyou Johnson designed the Seagram Building in Manhattan. Construction on the building finished in 1958, with 42 floors and a height of 525 feet.
The Eiffel Tower, built by Gustave Alexandre Eiffel in Paris, began construction in January 1887 and finished in March 1889. At 986 feet, this observation tower was the largest building in existence until 1930, when the Chrysler Building surpassed it.
The Sears Tower, located in Chicago, rises 1,450 feet with 110 stories. Construction on the tower finished in 1974, upon which it became the tallest building until 1998, when the Petronas Twin Towers in Malaysia surpassed its height. As of 2010, the Sears Tower remained the tallest building in the U.S. In 2009, Willis Group Holdings, Ltd., officially renamed the building Willis Tower.
Construction on the Brooklyn Bridge, which connects Manhattan to Brooklyn, began in 1869 and ended in 1883. John Roebling was the engineer responsible for creating this first steel-wire suspension bridge, which spans 1,596 feet.
Construction on the Gateway Arch, located on the riverfront of St. Louis, began in February 1963 and finished October 1965. Approximately 900 tons of stainless steel went into this 630-feet-tall and 630-feet-long catenary curve observation tower, and as of 2010, the arch remains the tallest national monument in the U.S.
Construction on the San Sebastian Church, also known as the Basilica Minore de San Sebastian, finished in 1891. This Roman Catholic church, located in Manila in the Philippines, revived the use of Gothic architecture in the Philippines. As of 2010, the church remains the only all-steel church in all of Asia.
