It's about half as long as Baseball base distances
In other words, 15 meters is 0.546810 times the length of Baseball base distances, and the length of Baseball base distances is 1.82880 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 one-third as long as Ha'Penny Bridge
In other words, the length of Ha'Penny Bridge is 2.860 times 15 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 three times as tall as a Giraffe
It's about one-third as tall as The Chicago Water Tower
In other words, the height of The Chicago Water Tower is 3.130 times 15 meters.(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.
It's about three-tenths as tall as The Arc de Triomphe
In other words, 15 meters is 0.310 times the height of The Arc de Triomphe, and the height of The Arc de Triomphe is 3.20 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 three-tenths as tall as Nelson's Column
In other words, 15 meters is 0.29050 times the height of Nelson's Column, and the height of Nelson's Column is 3.4420 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 three-and-a-half times as long as a Beetle (Volkswagen)
In other words, 15 meters is 3.6770 times the length of a Beetle (Volkswagen), and the length of a Beetle (Volkswagen) is 0.2720 times that amount.(1964 model) (a.k.a. Volkswagen 1200, a.k.a. Käfer)
A 1964 Volkswagen Beetle measures 4.079 m. As the longest continuously-produced automobile design — in production for 75 years between 1938 and 2003 — the Beetle was voted the most fourth-most influential car of the twentieth century by the Global Automotive Elections Foundation.