It's about one-and-three-fourths times as tall as The Cinderella Castle
In other words, 100 meters is 1.74 times the height of The Cinderella Castle, and the height of The Cinderella Castle is 0.575 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 one-and-three-fourths times as tall as The Leaning Tower of Pisa
In other words, 100 meters is 1.77 times the height of The Leaning Tower of Pisa, and the height of The Leaning Tower of Pisa is 0.565 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 one-and-four-fifths times as tall as The Mahabodhi Temple
In other words, 100 meters is 1.8 times the height of The Mahabodhi Temple, and the height of The Mahabodhi Temple is 0.56 times that amount.(a.k.a. Great Awakening Temple, a.k.a. Maha Bodhi Temple, a.k.a. Temple of Bodh Gaya, a.k.a. Mahabodhi Mahavihar) (Bodh Gaya, Gaya District, Bihar, India)
The tower of the Mahabodhi Temple measures 55 m in total height. The site has been of sacred interest for more than 2,000 years, with the current Temple dating back at least 1,400 years.
It's about half as tall as The Space Needle
In other words, 100 meters is 0.543 times the height of The Space Needle, and the height of The Space Needle is 1.84 times that amount.(Seattle, Washington) (to aircraft warning beacon at peak)
Built for a 1962 World's Fair, the Space Needle stands 184 m tall. With a track-and-wheel design inspired by railroad mechanics and a precisely-configured balance, the restaurant near the top of the space needle requires just a 1.5 hp motor to rotate at speeds of about 0.053 kph (0.033 mph).
It's about one-and-nine-tenths times as tall as Nelson's Column
In other words, 100 meters is 1.936 times the height of Nelson's Column, and the height of Nelson's Column is 0.5165 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 two times as tall as The Arc de Triomphe
In other words, 100 meters is 2 times the height of The Arc de Triomphe, and the height of The Arc de Triomphe is 0.5 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 two times as tall as The Chicago Water Tower
In other words, 100 meters is 2.13 times the height of The Chicago Water Tower, and the height of The Chicago Water Tower is 0.469 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 fast-food restaurants beginning with "Building Number 8," a prefabricated structure built in Minneapolis, Minnesota in 1936.