It's about one-seven-hundredth as tall as The CN Tower
In other words, 81 centimeters is 0.0014639 times the height of The CN Tower, and the height of The CN Tower is 683.110 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 55,333 centimeters 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 one-seven-hundred-fiftieth as tall as a Canton Tower
In other words, the height of a Canton Tower is 770 times 81 centimeters.(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 61,000 centimeters 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-nine-hundred-fiftieth as tall as Gocta Falls
In other words, 81 centimeters is 0.00105 times the height of Gocta Falls, and the height of Gocta Falls is 952 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 77,100 centimeters in total height. Although it sits just 4,200,000 centimeters 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 one-one-thousandth as tall as Burj Dubai
In other words, 81 centimeters is 0.000978 times the height of Burj Dubai, and the height of Burj Dubai is 1,020 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 82,800 centimeters to its roof. The tower also holds the current records for the world's highest Islamic mosque — at approximately 57,700 centimeters on the 158th floor (of 163 floors) — and the world's tallest outdoor swimming pool — at approximately 28,500 centimeters on the 78th floor.
It's about one-one-thousandth as long as The Navy Pier
In other words, the length of The Navy Pier is 1,000 times 81 centimeters.(a.k.a. Municipal Pier #2) (Chicago, Illinois)
The Navy Pier is 90,000 centimeters in total length. Originally named Municipal Pier #2, the pier was renamed Navy Pier in 1927 in honor of Naval personnel stationed there during World War I.
It's about one-one-thousandth as tall as The Three Sisters Falls
In other words, the height of The Three Sisters Falls is 1,000 times 81 centimeters.(a.k.a. Cataratas las Tres Hermanas) (Ayacucho, Peru)
The Three Sisters Falls rise to 90,000 centimeters in height. The falls are called Three Sisters after the three large tiers over which the falls flow.
It's about one-one-thousandth as tall as Olo'upena Falls
In other words, 81 centimeters is 0.0008999 times the height of Olo'upena Falls, and the height of Olo'upena Falls is 1,111 times that amount.(a.k.a. Oloupena Falls) (Molokai, Hawaii)
Olo'upena Falls rise to 90,010 centimeters in height. The isolated falls are the tallest in the United States and the fourth tallest in the world.