Willis Tower, Skyscraper in Chicago Loop, United States
The 442-meter Willis Tower contains 108 floors above ground, constructed with steel, aluminum, and glass in the International Style architecture movement.
When completed in 1974, the structure remained the tallest building in the world for over two decades until the Petronas Towers surpassed it.
The structure represents Chicago's leadership in skyscraper innovation, designed by architects Bruce Graham and Fazlur Khan from Skidmore Owings Merrill firm.
The Skydeck observation deck on the 103rd floor receives 1.7 million visitors annually and provides views spanning across four different states.
The building features nine square tubes in a 3x3 matrix configuration, with seven tubes stepping back at different heights to create its distinct profile.
Location: Chicago
Inception: 1974
Architects: Skidmore, Owings & Merrill, Bruce Graham, Fazlur Khan
Official opening: May 1973
Architectural style: International Style
Floors above the ground: 110
Floors below the ground: 3
Elevators: 104
Height: 442.1 m
Made from material: glass, aluminium, steel
Website: http://willistower.com
GPS coordinates: 41.87861,-87.63583
Latest update: May 26, 2025 11:20
This collection brings together skyscrapers that showcase advances in modern engineering and architecture worldwide. These structures rise above metropolises and reshape city horizons, from the sail-shaped Burj Al Arab in Dubai to the CCTV headquarters in Beijing with its two linked towers. Each building reflects a unique architectural approach and technical innovations tailored to its environment. The selection spans all continents and features buildings with various functions. The Petronas Towers in Kuala Lumpur, 452 meters high and connected by a sky bridge, stand alongside New York’s One World Trade Center, which reaches 541 meters. The Lakhta Center in Saint Petersburg is notable for its twisted glass facade, while the Torre Costanera in Santiago offers panoramic views of the Andes. Whether residential buildings like the Eureka Tower in Melbourne or commercial structures such as the Kingdom Centre in Riyadh, these constructions demonstrate how contemporary architecture shapes 21st-century cities.
This list entails the most iconic and exclusive skyscrapers across the globe including their fascinating architectural details.
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