Space elevator

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. Skyscrapers may host offices, hotels, residential spaces, and retail spaces. One common feature of skyscrapers is having a steel frame that supports curtain walls. This idea was invented by Viollet le Duc in his discourses on architecture. These curtain walls either bear on the framework below or are suspended from the framework above, rather than resting on load-bearing walls of conventional construction. Some early skyscrapers have a steel frame that enables the construction of load-bearing walls taller than of those made of reinforced concrete. Modern skyscraper walls are not load-bearing, and most skyscrapers are characterized by large surface areas of windows made possible by steel frames and curtain walls. However, skyscrapers can have curtain walls that mimic conventional walls with a small surface area of windows. Modern skyscrapers often have a tubular structure, and are designed to act like a hollow cylinder to resist wind, seismic, and other lateral loads. To appear more slender, allow less wind exposure and transmit more daylight to the ground, many skyscrapers have a design with setbacks, which in some cases is also structurally required. As of September 2023, fifteen cities in the world have more than 100 skyscrapers that are 150 m (492 ft) or taller: Hong Kong with 552 skyscrapers; Shenzhen, China with 373 skyscrapers; New York City, US with 314 skyscrapers; Dubai, UAE with 252 skyscrapers; Guangzhou, China with 188 skyscrapers; Shanghai, China with 183 skyscrapers; Tokyo, Japan with 168 skyscrapers; Kuala Lumpur, Malaysia with 156 skyscrapers; Wuhan, China with 149 skyscrapers; Chongqing, China, with 144 skyscrapers; Chicago, US, with 137 skyscrapers; Chengdu, China with 117 skyscrapers; Jakarta, Indonesia, with 112 skyscrapers; Bangkok, Thailand, with 111 skyscrapers, and Mumbai, India with 102. As of 2024, there are over 7 thousand skyscrapers over 150 m (492 ft) in height worldwide.
https://www.youtube.com/watch?v=mC6EjyvktW4
Tallest Building in Dubai (Full Episode) | Superstructures: Engineering Marvels | Nat Geo
https://www.youtube.com/watch?v=NJI8mOv4VW4
World's Tallest Tower: Burj Khalifa - Dubai's Vertical City | Free Documentary
https://www.youtube.com/watch?v=QCfr7gS53kc
Burj Khalifa – Skyscraper Supremacy – Big Bigger Biggest (Part 1)
https://www.youtube.com/watch?v=KWCWY5CAK8o
Rising Above NYC: The Ingenious Engineering of 53 West 53rd | Blueprint
https://www.youtube.com/watch?v=5RSs8fodpoA
China's Tallest Building: Shanghai Tower | China's Mega Projects | Free Documentary
https://www.youtube.com/watch?v=3srSlk5-P9w
Shanghai Super Tower: The 60,000 Ton Behemoth Made Out Of Steel | Megastructures Episode 4
https://www.youtube.com/watch?v=6jbf3ghhtKg
Super Skyscrapers - The Vertical City (2014) |Full Documentary
https://www.youtube.com/watch?v=Y2irptBxO34
Building the World's Tallest Skyscraper after Burj Khalifa [FULL DOCUMENTARY] | Merdeka 118
https://www.youtube.com/watch?v=oan5H8szE4s
Super Skyscrapers - Building the Future (2014) | Full Documentary
https://www.youtube.com/watch?v=mpBE1CzKkIM
Super Skyscrapers - One World Trade Center (2014) | Full Documentary
https://www.youtube.com/watch?v=LAtka6Wb1vg
Super Skyscrapers - The Billionaire Building (2014) | Full Documentary
https://www.youtube.com/watch?v=DRSFoP24jLM
Constructing The Scorpion Tower | Impossible Builds | Full Episode | PBS
https://www.youtube.com/watch?v=_mIFk8bgHKQ
Looking For Life on Mars (2021) | Full Documentary | NOVA

Symphony of the Seas Symphony of the Seas is an Oasis-class cruise ship owned and operated by Royal Caribbean International. She was built in 2018 in the Chantiers de l'Atlantique shipyard in Saint-Nazaire, France, the fourth in Royal Caribbean's Oasis class of cruise ships. At 228,081 GT, she was the largest cruise ship in the world by gross tonnage when built, surpassing her sister ship Harmony of the Seas, also owned by Royal Caribbean International, and surpassed by her sister ship Wonder of the Seas in 2022.
https://www.youtube.com/watch?v=ysFolHbypWA
Inside the Floating City’s Turnaround Day | Billion Pound Cruise
https://www.youtube.com/watch?v=oVd4yMGxFTE
World's Biggest Cruise Ships: The Hidden Workings of Sea Titans | Free Documentary
https://www.youtube.com/watch?v=Zz_bGptlIU4
Symphony of the Seas: Aboard a Colossal Engineering Marvel | FD Engineering
https://www.youtube.com/watch?v=89IcrnLO8_4
MS Fram: The Arctic Cruise That Sails From Pole To Pole
https://www.youtube.com/watch?v=jOWuXQUQSVU&t=2095s
Human Ingenuity at Work: Giant Cruise Ship & Mega Resort Secrets | FD Engineering
https://www.youtube.com/watch?v=xetCUiMpctQ
Mighty Cruise Ships: Carnival Vista | World’s Largest Fun Ship | Season 2 Episode 3 (Full Episode)
https://www.youtube.com/watch?v=mY3ezrp9rA8
Mighty Cruise Ships: Complete Season 2 Marathon (All Episodes) | Carnival Vista & More!
https://www.youtube.com/watch?v=dBAkvWr1-Ds
Colossal Shipbuilding: Construction of a Modern Cruise Marvel | FD Engineering
https://www.youtube.com/watch?v=ZgYAHkFLVtY
The World’s Largest Hospital Ship: Africa Mercy | Season 3 Episode 4 (Full Episode)
https://www.youtube.com/watch?v=IfMZSGZNUac
Mighty Cruise Ships: Complete Season 1 Marathon (All Episodes) | Azamara Journey and More! | MIGHTY
https://www.youtube.com/watch?v=XKndrP5zT-c
Extreme Constructions | Complete Series | All Episodes | FD Engineering