
It's about ninetenths as tall as The Chicago Water Tower.
In other words, 40.0 meters is 0.8530 times the height of The Chicago Water Tower, and the height of The Chicago Water Tower is 1.170 times that amount.
(Chicago, Illinois)The Chicago Water Tower is 46.9 m 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 fourfifths as tall as The Arc de Triomphe.
In other words, 40.0 meters is 0.820 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 49 m 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 threefourths as tall as Nelson's Column.
In other words, 40.0 meters is 0.77460 times the height of Nelson's Column, and the height of Nelson's Column is 1.2910 times that amount.
(London, England, United Kingdom) (from pedestal first step to tip of statue's hat)Nelson's Column measures 51.64 m 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 seventenths as tall as The Leaning Tower of Pisa.
In other words, 40.0 meters is 0.7090 times the height of The Leaning Tower of Pisa, and the height of The Leaning Tower of Pisa is 1.410 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 56.4 m 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 seventenths as tall as The Cinderella Castle.
In other words, 40.0 meters is 0.6940 times the height of The Cinderella Castle, and the height of The Cinderella Castle is 1.440 times that amount.
(Fantasyland, Magic Kingdom, Walt Disney World, Lake Buena Vista and Bay Lake, Florida)Walt Disney World's Cinderella Castle is 57.6 m 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 oneandahalf times as long as Baseball base distances.
In other words, 40.0 meters is 1.45820 times the length of Baseball base distances, and the length of Baseball base distances is 0.685780 times that amount.
(MLB Official Baseball Rules specification)According to MLB Official Baseball Rules, the distance between baseball diamond bases is 27.432 m. 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 threefifths as long as The Wingspan of a 747.
In other words, 40.0 meters is 0.5840 times the length of The Wingspan of a 747, and the length of The Wingspan of a 747 is 1.710 times that amount.
(a.k.a. Boeing 747, a.k.a. Jumbo Jet, a.k.a. Queen of the Skies) (for Boeing 7478 series)The wingspan of a Boeing 7478 is 68.5 m. Fully loaded, the 747 can travel 8,290,000 meters before refueling. 
