It's about five times as tall as Gocta Falls
In other words, 20 furlongs is 5.220 times the height of Gocta Falls, and the height of Gocta Falls is 0.1920 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 3.830 furlongs in total height. Although it sits just 209 furlongs 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 six-and-a-half times as tall as a Canton Tower
In other words, the height of a Canton Tower is 0.150 times 20 furlongs.(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 3 furlongs 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-tenth as tall as Olympus Mons
In other words, 20 furlongs is 0.150 times the height of Olympus Mons, and the height of Olympus Mons is 6.70 times that amount.(a.k.a. Mount Olympus) (Mars)
The tallest mountain in the solar system, Olympus Mons rises to approximately 130 furlongs. The mountain has been known to astronomers since the nineteenth century because it is tall enough to rise above Mars' frequent dust storms.
It's about seven-and-a-half times as tall as The CN Tower
In other words, 20 furlongs is 7.27120 times the height of The CN Tower, and the height of The CN Tower is 0.137530 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 2.75060 furlongs 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 seven-and-a-half times as tall as The Ostankino Tower
In other words, the height of The Ostankino Tower is 0.130 times 20 furlongs.(a.k.a. Останкинская телебашня) (Moscow, Russia) (to spire)
The Ostankino Tower stands 2.70 furlongs to its spire. The tower has been the tallest structure in Europe since its construction in 1967 and was, at at that time, the only free-standing structure taller than 2.50 furlongs.
It's about eight times as tall as The Shanghai World Financial Center
In other words, 20 furlongs is 8.180 times the height of The Shanghai World Financial Center, and the height of The Shanghai World Financial Center is 0.1220 times that amount.(上海环球金融中 上海環球金融中心, Shànghǎi huánqiú jīnróng zhōngxīn) (a.k.a. SWFC) (Shanghai, China) (to spire)
The Shanghai World Financial Center is 2.450 furlongs tall to its roof. It is home to both the world's highest hotel (on its 79th through 93rd floors) and the world's tallest observation deck (on its 100
It's about nine times as tall as The Petronas Twin Towers
In other words, 20 furlongs is 8.9030 times the height of The Petronas Twin Towers, and the height of The Petronas Twin Towers is 0.11230 times that amount.(a.k.a. Menara Berkembar Petronas, a.k.a. Petronas Towers) (Kuala Lumpur, Malaysia) (to spire)
Each of the Petronas Towers stands 2.2460 furlongs to their spires. Holding the record as the tallest buildings in the world from 1998 to 2004, the towers continue to hold the record for the deepest foundation barrettes — up to 0.57170 furlongs deep.