A skyscraper is a tall continuously habitable building having multiple floors. Modern sources define skyscrapers as being at least 100 meters (330 ft) or 150 meters (490 ft) 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.
Eaton's / John Maryon Tower was a proposed supertall 140-storey office skyscraper, to be built in Toronto, Ontario, Canada. In 1971, Eaton's was to partner with a developer named John Maryon to build a 503 metre tower in the College Park area of Downtown Toronto. With a 183-metre communication mast added to the roof of the triangular glass office tower, the total proposed height was 686 metres. Plans for the tower were cancelled, because building a structure of this height was considered impossible at the time of its planning. The skyscraper was planned two years before the Willis Tower was completed, and five years before the CN Tower was completed. Had the tower been built, it would have been the world's tallest building until 2008, when the Burj Khalifa surpassed its planned height.
Trans National Place, also known as 115 Winthrop Square, was a proposed supertall skyscraper in Boston, Massachusetts, US. Original designs were completed by architect Renzo Piano who later left the project in March 2007. Trans National Place was intended to stand as the tallest building in Boston, Massachusetts, and New England, surpassing the 60-story John Hancock Tower by 15 stories and at least 210 feet to become the tallest building in the city. The developer was local businessman Steve Belkin, who also owns an adjoining mid-rise building, which would have been torn down as part of the project.
Panorama Tower is a mixed-use 85-story skyscraper in Miami, Florida, United States. Located in the Brickell district of Downtown Miami, it is the tallest building in Miami, and the tallest building in Florida.
CCCC Miami Towers is the preliminary name for a mixed-use project being planned in the Brickell neighborhood of Miami, Florida, United States. The site is bounded by South Miami Avenue to the east, SW 14th Terrace to the south, SW 1st Avenue to the west, and SW 14th Street to the north. The site broke ground in 2006 and was excavated for a previous project that stalled known as Capital at Brickell. It was revived in 2014 by China City Construction Corp, an affiliate of China Communications Construction Company.
One Bayfront Plaza is a proposed supertall skyscraper in Miami, Florida, U.S. The building, construction of which has been approved, would stand at 1,049 feet (320 m), with 93 floors,[A] becoming the tallest building in Miami and Florida. One Bayfront Plaza would primarily consist of offices and hotel space, but also would include a retail mall, condominiums, and parking garage on the lower levels, as well as possibly an observation deck at the top. The entire project consists of over 1,400,000 square feet (100,000 m2) of Class A office and hotel space, as well as a total building area of over 4,000,000 square feet (371,612 m2) including the large podium. One Bayfront Plaza is the first skyscraper over 1,000 feet (305 m) to be approved for construction in Miami. The building's primary advocate is real estate developer Tibor Hollo, who has won several awards for his 55 years as a developer in Miami, and is currently the president of Florida East Coast Realty.
The Crown Las Vegas, previously known as the Las Vegas Tower, was a proposed supertall skyscraper that would have been built on the Las Vegas Strip in Winchester, Nevada. If built, the tower would have been 1,887 feet (575 m) tall, making it the tallest building in the United States and 5th tallest in the world. After two major redesigns, the project was cancelled in March 2008.
80 South Street was a proposed residential skyscraper in the Financial District of Manhattan, New York City, that had been planned in the early 21st century. The original proposal for the skyscraper, released in 2003, was designed by renowned Spanish architect Santiago Calatrava, and was canceled in 2008 as a result of a declining real-estate market. A new shorter design was planned to be finished in 2016, and China Oceanwide Holdings Limited acquired 80 South Street in March 2016. Following the collapse of Chinese real estate conglomerate Evergrande and the associated Chinese property sector crisis, in October 2021 China Oceanwide began marketing the property at an aggressive discount of more than $190 million below its original acquisition cost to raise funds for its parent entity.
Waldorf-Astoria Hotel and Residence Tower Chicago was a planned hotel and condominium skyscraper that would have been 1,265 feet (386 m) tall. The Prime Group was in charge of the project, which was proposed at a cost of $610 million. The building would have been located one block from the Chicago River, and north of the Sheraton Chicago in the Streeterville neighborhood of the Near North Side community area of Chicago. Another of the building's developers, the Fordham Company, was also the initial developer of the now-cancelled Chicago Spire.
The American Commerce Center was a proposed supertall skyscraper approved for construction in Philadelphia, Pennsylvania but cancelled due to the 2008 recession. The Comcast Technology Center, the tallest skyscraper in both Philadelphia and Pennsylvania, now stands on the site.
The tallest building in the world, as of 2024, is the Burj Khalifa in Dubai. 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 Santander Bank Tower is a proposed skyscraper to be built in the U.S. city of Miami, Florida.
One Brickell City Centre is a proposed 80 story, 1,040 ft office skyscraper in the city of Miami, Florida. The tower would be part of the existing nine-acre Brickell City Centre development. If built, One Brickell City Centre would be the tallest building in Miami and the Southeastern United States, surpassing the Bank of America Plaza in Atlanta. It would also surpass the height of the not yet constructed One Bayfront Plaza, which is approved at 1,010 ft tall. Demolition on the existing structure is still underway as of January 2024.
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.
The Waldorf Astoria Hotel and Residences is a skyscraper currently under construction in Miami, Florida. It is the first supertall building to begin construction in Florida, out of several that have been proposed in Miami in the 21st century. It is planned to be constructed on the proposed site of the Empire World Towers in the 2000s, which was ultimately scaled back and cancelled.
