It's about one-and-one-tenth 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 one-and-one-tenth 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)
The Leaning Tower of Pisa stands 30.8 fathoms tall along the angle of its lean. In May of 2008, in an successful effort to stabilize the tower, 70 tonnes of earth were removed from the tower's base on the side opposite the lean.
It's about one-and-one-tenth 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)
Nelson's Column measures 28.24 fathoms from the first step of the pedestal's base to the top of the statue's hat. While the London tower is the tallest, there are at least eight other monuments to Admiral Horatio Nelson, 1st Viscount Nelson, 1st Duke of Bronté throughout England, Scotland, Ireland, Canada, and Barbados.
It's about four-fifths 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 747-8 series)
The wingspan of a Boeing 747-8 is 37.5 fathoms. Fully loaded, the 747 can travel 4,530,000 fathoms before refueling.
It's about one-and-one-fifth 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)
The Arc de Triomphe stands 27 fathoms tall. France's Tomb of the Unknown Soldier from the First World War lies beneath the arch and is commemorated by the first eternal flame to have been lit in modern European history.
It's about one-and-one-fourth 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 fast-food restaurants beginning with "Building Number 8," a prefabricated structure built in Minneapolis, Minnesota in 1936.
It's about three-fourths 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)
Giant Sequoias of the Giant Sequoia National Monument located in Sierra Nevada, near Visalia, California can grow to heights of 42 fathoms. The wood from the Giant Sequoias is often brittle and prone to shattering when such trees are felled, and as a result the trees logged in the late nineteenth century were often usable only as shingles or matchsticks.