How long is 21 meters?
It's about one-and-one-tenth times as long as a Cricket Pitch
The length of a Cricket Pitch is about 20.11680 meters.
(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 20.11680 meters. The wickets at either end of the pitch stand 0.720 meters tall including the bails.
It's about one-and-one-tenth times as long as a Bowling Lane
The length of a Bowling Lane is about 19.1560 meters.
(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 19.156 m. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.
It's about four-fifths as tall as De Gooyer
The height of De Gooyer is about 27 meters.
(a.k.a. De Funenmolen, a.k.a. The Mill on the Funen) (near Oostelijk Havengebied, Amsterdam, Netherlands) (total structure height)
The tallest windmill in Amsterdam, De Gooyer stands at 27 m in structural height. Its prominence owes to the fact that it was relocated atop the base of a former water mill, following two earlier moves in the eighteenth and nineteenth centuries. The windmill's four sails have a total span of about 18 m.
It's about three-fourths as long as Baseball base distances
The length of Baseball base distances is about 27.4320 meters.
(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 one-and-two-fifths times as tall as The Hollywood Sign
The height of The Hollywood Sign is about 15 meters.
(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)
Each of the white letters in the Hollywood Sign measures 15 m tall. Built as an advertisement in 1923, the sign was intended to stand for only eighteen months.
It's about one-and-two-fifths times as long as a Semitrailer
The length of a Semitrailer is about 14.630 meters.
(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 14.63 m (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-and-three-fifths times as tall as a Brachiosaurus
The height of a Brachiosaurus is about 13 meters.
(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 13 m. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about one-and-nine-tenths times as tall as a Telephone Pole
The height of a Telephone Pole is about 11 meters.
(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
A standard telephone pole is 11 m tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about half as long as Ha'Penny Bridge
The length of Ha'Penny Bridge is about 42.90 meters.
(a.k.a. Droichead na Leathphingine, a.k.a. Liffey Bridge, a.k.a. Droichead na Life, f.k.a. Wellington Bridge) (Quay of Bachelors Walk, Temple Bar Neighborhood, Dublin, Ireland)
The Ha'Penny Bridge, crossing the River Liffey in Dublin, measures 42.9 meters in total length. Over 30,000 pedestrians cross the breach each day.
It's about two-fifths as tall as The Chicago Water Tower
The height of The Chicago Water Tower is about 46.90 meters.
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.
It's about two-fifths as tall as The Arc de Triomphe
The height of The Arc de Triomphe is about 49 meters.
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-fifths as tall as Nelson's Column
The height of Nelson's Column is about 51.640 meters.
(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-and-a-half times as long as a London bus
The length of a London bus is about 8.380 meters.
(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 8.38 m in length. The buses were said to be well-designed for travel in the London traffic, as they offered an open door for riders to board and exit even while the bus was moving at low speeds, and a full-time conductor to collect fares.
It's about two-fifths as tall as The Mahabodhi Temple
The height of The Mahabodhi Temple is about 55 meters.
(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 two-fifths as tall as The Leaning Tower of Pisa
The height of The Leaning Tower of Pisa is about 56.40 meters.
(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.