The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings, including skyscrapers, and sustainable urban design. A non-profit organization based at the Monroe Building in Chicago, Illinois, United States, the CTBUH announces the title of "The World's Tallest Building" and is widely considered to be an authority on the official height of tall buildings. Its stated mission is to study and report "on all aspects of the planning, design, and construction of tall buildings."
U.S. Bank Tower, known locally as the Library Tower and formerly as the First Interstate Bank World Center, is a 1,018-foot (310.3 m) skyscraper in downtown Los Angeles, California. It is, by structural height, the third-tallest building in California, the second-tallest building in Los Angeles, the 24th-tallest in the United States, the third-tallest west of the Mississippi River after the Salesforce Tower and the Wilshire Grand Center, and the 129th-tallest building in the world, after being surpassed by the Wilshire Grand Center. However, the U.S. Bank Tower does surpass both the Salesforce Tower and the Wilshire Grand Center in roof height, making it the only building in California whose roof height exceeds 1,000 feet (300 m). Because local building codes required all high-rise buildings to have a helipad, it was known as the tallest building in the world with a rooftop heliport from its completion in 1989 to 2010 when the China World Trade Center Tower III opened. It is also the third-tallest building in a major active seismic region; its structure was designed to resist an earthquake of 8.3 on the Richter scale. It consists of 73 stories above ground and two parking levels below ground. Construction began in 1987 with completion in 1989. The building was designed by Henry N. Cobb of the architectural firm Pei Cobb Freed & Partners and cost $350 million to build. It is one of the most recognizable buildings in Los Angeles, and often appears in establishing shots for the city in films and television programs.
The Jin Mao Tower, also known as the Jinmao Building or Jinmao Tower, is a 420.5-meter-tall (1,380 ft), 88-story landmark skyscraper in Lujiazui, Pudong, Shanghai, China. It contains a shopping mall, offices and the Grand Hyatt Shanghai hotel which starts from the 53rd floor, which at the time of completion was the highest hotel in the world. Along with the Oriental Pearl Tower, the Shanghai World Financial Center and the Shanghai Tower it is part of the Lujiazui skyline seen from the Bund. It was the tallest building in China from its completion in 1999 until 2007, when it was surpassed by the Shanghai World Financial Center which is located close by. The Shanghai Tower, a 128-story building located next to these two buildings, surpassed the height of both these buildings in 2015, creating the world's first trio of adjacent supertall skyscrapers.
SEG Plaza is a skyscraper in Shenzhen, Guangdong Province, China. Completed in 2000 and located at the junction of Shennan Road and Huaqiangbei Electronics Market, it originally stood 356 metres (1,168 ft) tall including the height of the original antenna which has since been removed. It was the 21st tallest in China and the 72nd tallest in the world. The observation floor at the 69th level used to offer views over Shenzhen and northern Hong Kong but has been converted to office space. It is the home of, and named after the Shenzhen Electronics Group (SEG). It can be reached by Huaqiang North Station and Huaqiang Road Station of the Shenzhen Metro.
Cayan Tower, known as Infinity Tower before it was inaugurated, is a 306-metre-tall (1,004 ft), 75-story skyscraper in Dubai, United Arab Emirates by Cayan Real Estate Investment and Development. The tower is designed by Skidmore, Owings and Merrill SOM architectural group. Upon its opening on 10 June 2013, the tower became the world's tallest high-rise building with a twist of 90 degrees. This record has since been surpassed by the Shanghai Tower, which opened in February 2015.
Guangzhou International Finance Center or Guangzhou West Tower, is a 103-story, skyscraper at Zhujiang Avenue West in the Tianhe District of Guangzhou, Guangdong. One half of the Guangzhou Twin Towers, it is the 24th tallest building in the world, completed in 2010. As of 2023, it is the world's tallest building with a rooftop helipad, at. The world's second-tallest building with a rooftop helipad was also completed in 2010: Beijing's China World Trade Center Tower III, whose roof-top helipad is 330 m high. Both buildings are taller than the U.S. Bank Tower, the previous record-holder from 1989 to 2010, whose roof-top helipad is 310.3 m (1,018 ft) high.
Shanghai Tower is a 128-story, 632-meter-tall (2,073 ft) 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 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 20.5 meters per second until 2017, when it was surpassed by the Guangzhou CTF Finance Center, with its top speed of 21 meters per second. Designed by international design firm Gensler and owned by the Shanghai Municipal Government, it is the tallest of the world's first triple-adjacent supertall buildings in Pudong, the other two being the Jin Mao Tower and the Shanghai World Financial Center. Its tiered construction, designed for high energy efficiency, provides nine separate zones divided between office, retail and leisure use.
The KK100, formerly known as Kingkey 100 and Kingkey Finance Tower, is a supertall skyscraper in Shenzhen, Guangdong.
The tallest building in the world, as of 2024, is the Burj Khalifa in Dubai, United Arab Emirates. The title of "world's tallest building" has been held by various buildings in modern times, including the Lincoln Cathedral in Lincoln, England, and the Empire State Building and the original World Trade Center, both in New York City.
The Ping An Finance Center is a 115-storey, 599.1 m (1,966 ft) supertall skyscraper in Shenzhen, Guangdong, China. The building was commissioned by Ping An Insurance and designed by the American architectural firm Kohn Pedersen Fox Associates. It was completed in 2017, and is the tallest building in Shenzhen, the 2nd tallest building in China and the 5th tallest building in the world. It also broke the record of having the highest observation deck in a building at 562 m (1,844 ft). It is the second largest skyscraper in the world by floor area after Azabudai Hills Main Tower in Tokyo, Japan.
The Guangzhou Chow Tai Fook Finance Centre, also called East Tower, it is a 530-metre (1,739 ft) tall mixed-use skyscraper in Guangzhou, Guangdong, which was completed in October 2016. It is the tallest completed building in Guangzhou, the third-tallest in China, and the eighth-tallest in the world. The Guangzhou CTF Finance Centre has a total of 111 above ground and five below ground floors and houses a shopping mall, offices, apartments, and a hotel. The skyscraper has a gross floor area of 507,681.0 m2 (5,464,633 sq ft), of which a little over 20% is not part of the skyscraper itself, but of the podium connected to it.
Wilshire Grand Center is a 1,100-foot (335.3 m) skyscraper in the financial district of downtown Los Angeles, California, occupying the entire city block between Wilshire Boulevard and 7th, Figueroa, and Francisco streets. Completed in 2017, it is the tallest building west of Chicago. Though the structural top of the Wilshire Grand surpasses L.A.'s U.S. Bank Tower by 82 ft (25 m), the roof of the U.S. Bank Tower is still 90 ft above the Wilshire Grand's. The Skyscraper Center lists the Wilshire Grand Center as the 15th-tallest building in the U.S. and the 95th-tallest in the world. It won the Structural Engineering Award 2019 Award of Excellence from the Council on Tall Buildings and Urban Habitat.
CITIC Tower is a supertall skyscraper in the Central Business District of Beijing, China. The 109-story, 528 m (1,732 ft) building constructed by China Construction Third Engineering Bureau is the tallest in the city, surpassing the China World Trade Center Tower III by 190 m (620 ft). On 18 August 2016, CITIC Tower surpassed China World Trade Center Tower III in height, becoming Beijing's tallest building. The tower structurally topped out on 9 July 2017, fully topped out on 18 August 2017, and was completed in late 2018, making CITIC Tower the tallest completed building of 2018. As of 2024, it is the tallest building with a rooftop helipad in the world.
4/C, also known as 4th & Columbia, is a proposed supertall skyscraper in Seattle, Washington, United States. If built, the 1,020-foot-tall (310 m), 91-story tower would be the tallest in Seattle, surpassing the neighboring Columbia Center, and the first supertall in the Pacific Northwest. The project has been under development by Miami-based Crescent Heights since 2015 and undergone several design changes and modifications under three architecture firms. As of 2023, 4/C is expected to have 1,090 residential units—apartments up to the 64th floor and condominiums from the 65th to 90th floor—along with several coworking and retail spaces. The latest version was designed by Skidmore, Owings & Merrill.
Skidmore, Owings and Merrill [1] 
Arup [1] 
