List of tallest buildings in St. Louis

The tallest buildings in St. Louis, Missouri, include the 630-foot (190 m) Gateway Arch, which is also the tallest accessible structure in Missouri and the tallest monument in a national park, rising 75 feet (23 m) higher than the Washington Monument.

The tallest habitable building in the city is the 42-story One Metropolitan Square, completed in 1989. At 593 feet (181 m), it is the third-highest building in Missouri and the second-tallest habitable building. Its tenants include architecture firm Hellmuth, Obata & Kassabaum (HOK), which designed the building, along with the only other habitable buildings in St. Louis over 500 feet (150 m): One AT&T Center and the Thomas F. Eagleton United States Courthouse.

None of the city's buildings are among the 100 tallest in the United States.

The history of skyscrapers in St. Louis began with the 1850s construction of Barnum's City Hotel, a six-story building designed by architect George I. Barnett. Until the 1890s, no building in St. Louis rose over eight stories, but construction in the city rose during that decade, due to the development of elevators and the use of steel frames. The first building to use a steel frame in St. Louis was the Wainwright Building, a 10-story office building and one of the first modern skyscrapers. The building, which was designed by Louis Sullivan and Dankmar Adler, illustrates Sullivan's principle of "form follows function". From 1864–1894, the tallest building in St. Louis was the Old Courthouse, at a height of 192 feet (59 m). Throughout the 1890s and into the 1900s, St. Louis saw construction move westward, especially that of office buildings. In 1914, the Railway Exchange Building was completed, which became the city's tallest building for many years. The city then underwent a moderate building boom in the 1920s, leading to the planning of the Jefferson National Expansion Memorial in 1935.

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