It's about nine-tenths as tall as The Chicago Water Tower.
In other words, 138 feet is 0.8970 times the height of The Chicago Water Tower, and the height of The Chicago Water Tower is 1.110 times that amount.(Chicago, Illinois)
The Chicago Water Tower is 154 feet 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 nine-tenths as tall as The Arc de Triomphe.
In other words, 138 feet is 0.860 times the height of The Arc de Triomphe, and the height of The Arc de Triomphe is 1.20 times that amount.(Paris, France)
The Arc de Triomphe stands 160 feet 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 four-fifths as tall as Nelson's Column.
In other words, 138 feet is 0.81450 times the height of Nelson's Column, and the height of Nelson's Column is 1.2280 times that amount.(London, England, United Kingdom) (from pedestal first step to tip of statue's hat)
Nelson's Column measures 169.40 feet 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 three-fourths as tall as The Leaning Tower of Pisa.
In other words, 138 feet is 0.7460 times the height of The Leaning Tower of Pisa, and the height of The Leaning Tower of Pisa is 1.340 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 185 feet 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 three-fourths as tall as The Cinderella Castle.
In other words, the height of The Cinderella Castle is 1.370 times 138 feet.(Fantasyland, Magic Kingdom, Walt Disney World, Lake Buena Vista and Bay Lake, Florida)
Walt Disney World's Cinderella Castle is 189 feet 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-a-half times as long as Baseball base distances.
In other words, 138 feet is 1.53330 times the length of Baseball base distances, and the length of Baseball base distances is 0.652190 times that amount.(MLB Official Baseball Rules specification)
According to MLB Official Baseball Rules, the distance between baseball diamond bases is 90 feet. While second and home base are located upon the corners of the 27.432 sq. m area created by the bases, first and third base are placed within that square, to better allow the umpires to judge whether a ball is fair or foul.
It's about three-fifths as long as The Wingspan of a 747.
In other words, 138 feet is 0.6140 times the length of The Wingspan of a 747, and the length of The Wingspan of a 747 is 1.630 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 225 feet. Fully loaded, the 747 can travel 27,200,000 feet before refueling.