
It's about oneandonetenth times as tall as The Cinderella Castle.
In other words, 31.8 fathoms is 1.01 times the height of The Cinderella Castle, and the height of The Cinderella Castle is 0.99 times that amount.
(Fantasyland, Magic Kingdom, Walt Disney World, Lake Buena Vista and Bay Lake, Florida)Walt Disney World's Cinderella Castle is 31.5 fathoms tall. The castle's architecture uses the optical trick known as "forced perspective" — the castle gets smaller near the top — to appear larger than it truly is.
It's about oneandonetenth times as tall as The Leaning Tower of Pisa.
In other words, 31.8 fathoms is 1.03 times the height of The Leaning Tower of Pisa, and the height of The Leaning Tower of Pisa is 0.971 times that amount.
(a.k.a. The Tower of Pisa, a.k.a. Torre pendente di Pisa) (Pisa, Italy) (height along center axis)
It's about oneandonetenth times as tall as Nelson's Column.
In other words, 31.8 fathoms is 1.126 times the height of Nelson's Column, and the height of Nelson's Column is 0.8881 times that amount.
(London, England, United Kingdom) (from pedestal first step to tip of statue's hat)
It's about fourfifths as long as The Wingspan of a 747.
In other words, 31.8 fathoms is 0.849 times the length of The Wingspan of a 747, and the length of The Wingspan of a 747 is 1.18 times that amount.
(a.k.a. Boeing 747, a.k.a. Jumbo Jet, a.k.a. Queen of the Skies) (for Boeing 7478 series)
It's about oneandonefifth times as tall as The Arc de Triomphe.
In other words, the height of The Arc de Triomphe is 0.83 times 31.8 fathoms.
(Paris, France)
It's about oneandonefourth times as tall as The Chicago Water Tower.
In other words, 31.8 fathoms is 1.24 times the height of The Chicago Water Tower, and the height of The Chicago Water Tower is 0.806 times that amount.
(Chicago, Illinois)The Chicago Water Tower is 25.6 fathoms tall. The tower's architecture was one source of inspiration behind the design of White Castle fastfood restaurants beginning with "Building Number 8," a prefabricated structure built in Minneapolis, Minnesota in 1936.
It's about threefourths as tall as a Giant Sequoia (tree).
In other words, the height of a Giant Sequoia (tree) is 1.3 times 31.8 fathoms.
(a.k.a. Sequoiadendron giganteum, a.k.a. Sierra redwood, a.k.a. Wellingtonia) 
