It's about seven-tenths as tall as The CN Tower
In other words, 842.90 cubits is 0.69646 times the height of The CN Tower, and the height of The CN Tower is 1.4358 times that amount.(a.k.a. La Tour CN, a.k.a. Canadian National Tower, a.k.a. Canada's National Tower) (Toronto, Canada) (to spire)
The CN Tower measures 1,210.30 cubits tall at its spire. Used only in emergencies and for charitable climbing events, the 2,579-step staircase to the top is the longest metal staircase in the world.
It's about three-fifths as tall as a Canton Tower
In other words, 842.90 cubits is 0.63 times the height of a Canton Tower, and the height of a Canton Tower is 1.6 times that amount.(a.k.a. Guangzhou TV & Sightseeing Tower, a.k.a. 广 州 电 视 观 光 塔) (Guangzhou, China) (to spire)
The Guangzhou TV & Sightseeing Tower stands 1,300 cubits to its spire. Initially described as holding the record for the tallest Ferris wheel in the world, the ride at the top of the tower is actually an observation carousel; cars complete a trip around the top-floor track about every half-hour.
It's about one-and-seven-tenths times as tall as The Golden Gate Bridge
In other words, 842.90 cubits is 1.7 times the height of The Golden Gate Bridge, and the height of The Golden Gate Bridge is 0.588 times that amount.(San Francisco, California and Marin County, California) (height above water)
The height of each tower of Golden Gate Bridge is 497 cubits above the surface of the San Francisco Bay. One of the key designers of the bridge, Charles Ellis, had no engineering degree when he began working on the project, but would later go on to write what became a standard textbook on structural engineering, and would ultimately be forced to complete his calculations on the bridge by working without pay for five months.
It's about half as tall as Gocta Falls
In other words, 842.90 cubits is 0.5 times the height of Gocta Falls, and the height of Gocta Falls is 2 times that amount.(a.k.a. Gocta Cataracts, a.k.a. Catarata del Gocta) (Amazonas, Peru) (total height)
Gocta Falls, a waterfall on the Cocahuayco River, measures 1,690 cubits in total height. Although it sits just 91,900 cubits from the major city of Chachapoyas, the waterfall was unknown to non-locals until it was documented during a 2005 expedition by a German economist.
It's about two times as tall as The Space Needle
In other words, 842.90 cubits is 2.1 times the height of The Space Needle, and the height of The Space Needle is 0.478 times that amount.(Seattle, Washington) (to aircraft warning beacon at peak)
Built for a 1962 World's Fair, the Space Needle stands 402 cubits tall. With a track-and-wheel design inspired by railroad mechanics and a precisely-configured balance, the restaurant near the top of the space needle requires just a 1.5 hp motor to rotate at speeds of about 0.053 kph (0.033 mph).
It's about half as tall as Burj Dubai
In other words, 842.90 cubits is 0.465 times the height of Burj Dubai, and the height of Burj Dubai is 2.15 times that amount.(formally Burj Khalifa, a.k.a. Dubai Tower, a.k.a. برج خليفة) (Dubai, UAE) (to roof)
Burj Khalifa, the tallest manmade structure in the world, stands 1,810 cubits to its roof. The tower also holds the current records for the world's highest Islamic mosque — at approximately 1,260 cubits on the 158th floor (of 163 floors) — and the world's tallest outdoor swimming pool — at approximately 623 cubits on the 78th floor.
It's about two times as tall as St. Paul's Cathedral
In other words, 842.90 cubits is 2.21 times the height of St. Paul's Cathedral, and the height of St. Paul's Cathedral is 0.452 times that amount.(London, England, United Kingdom)
St. Paul's Cathedral measures 381 cubits to its peak. The southwest tower of the Cathedral contains the bell known as "Great Paul," which is the largest bell in Great Britain at 15,000 kg (16.5 tons), outweighing the more iconic Big Ben bell by about 3,000 kg (3 tons).