One World Trade CenterOne World Trade Center, also known as One World Trade, One WTC, and formerly called the Freedom Tower during initial planning stages, is the main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City. Designed by David Childs of Skidmore, Owings & Merrill, One World Trade Center is the tallest building in the United States, the tallest building in the Western Hemisphere, and the seventh-tallest in the world.
Burj KhalifaThe Burj Khalifa (known as the Burj Dubai prior to its inauguration in 2010) is a skyscraper in Dubai, United Arab Emirates. It is the world's tallest building. With a total height of 829.8 m (2,722 ft, or just over half a mile) and a roof height (excluding antenna, but including a 242.6 m spire) of , the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009, supplanting Taipei 101, the previous holder of that status.
Jeddah TowerJeddah Tower (برج جدة), previously known as Kingdom Tower (برج المملكة), is a skyscraper construction project in Jeddah, Saudi Arabia. It is planned to be the first tall building and would be the world's tallest building or structure upon completion, standing taller than the Burj Khalifa. Located in the north side of Jeddah, it is the centerpiece of the Jeddah Economic City project. The development is currently on hold. The design, created by American architect Adrian Smith, who also designed the Burj Khalifa, incorporates many unique structural and aesthetic features.
ElevatorAn elevator or lift is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack. In agriculture and manufacturing, an elevator is any type of conveyor device used to lift materials in a continuous stream into bins or silos.
Shanghai TowerShanghai Tower () is a 128-story, megatall skyscraper in Lujiazui, Pudong, Shanghai. It is the tallest building in China and the world's third-tallest building by height to architectural top. It is the tallest and largest LEED Platinum certified building in the world since 2015. It shares the record (along with the Ping An Finance Center) of having the world's highest observation deck within a building or structure at 562 m. It had the world's second-fastest elevators at a top speed of until 2017, when it was surpassed by the Guangzhou CTF Finance Center, with its top speed of .
Taipei 101Taipei 101 (; stylized as TAIPEI 101), formerly known as the Taipei World Financial Center, is a skyscraper in the capital Taipei, Taiwan. The building was officially classified as the world's tallest from its opening in 2004 until the 2010 completion of the Burj Khalifa. Upon completion, it became the world's first skyscraper to exceed a height of half a kilometer (about 0.3 miles). Taipei 101 is the tallest building in Taiwan. The elevators of Taipei 101 that transport passengers from the 5th to the 89th floor in 37 seconds (attaining ) set speed records.
Willis TowerThe Willis Tower (originally the Sears Tower) is a 110-story, skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), it opened in 1973 as the world's tallest building, a title that it held for nearly 25 years. It is the third-tallest building in the Western Hemisphere, as well as the 23rd-tallest in the world. Each year, more than 1.
SkyscraperA skyscraper is a tall, continuously habitable building having multiple floors. Modern sources currently define skyscrapers as being at least or in height, though there is no universally accepted definition, other than being very tall high-rise buildings. Historically, the term first referred to buildings with between 10 and 20 stories when these types of buildings began to be constructed in the 1880s. Skyscrapers may host offices, hotels, residential spaces, and retail spaces.
Modern architectureModern architecture, or modernist architecture, was an architectural movement or architectural style based upon new and innovative technologies of construction, particularly the use of glass, steel, and reinforced concrete; the idea that form should follow function (functionalism); an embrace of minimalism; and a rejection of ornament. It emerged in the first half of the 20th century and became dominant after World War II until the 1980s, when it was gradually replaced as the principal style for institutional and corporate buildings by postmodern architecture.
