It's about eight times as tall as The Empire State Building
In other words, 3,000 meters is 7.87380 times the height of The Empire State Building, and the height of The Empire State Building is 0.1270 times that amount.(New York City, New York) (to top of building)
The Empire State Building stands 381.01 m to its architectural peak. The spire emerging from the top of the building was originally intended to be a mooring mast for blimps whose passengers could disembark onto a landing platform on the 102
It's about one-tenth as tall as Olympus Mons
In other words, 3,000 meters is 0.110 times the height of Olympus Mons, and the height of Olympus Mons is 9.10 times that amount.(a.k.a. Mount Olympus) (Mars)
The tallest mountain in the solar system, Olympus Mons rises to approximately 27,000 meters. The mountain has been known to astronomers since the nineteenth century because it is tall enough to rise above Mars' frequent dust storms.
It's about nine-and-a-half times as tall as The Eiffel Tower
In other words, 3,000 meters is 9.260 times the height of The Eiffel Tower, and the height of The Eiffel Tower is 0.1080 times that amount.(a.k.a. La Tour Eiffel) (Paris, France) (to flagpole peak)
The Eiffel Tower stands 324 m tall, including its flagpole. The Tower is the largest structure in Paris as most other buildings are governed by a zoning restriction limiting them to a height of 37 m or less.
It's about ten times as long as The QE2
In other words, 3,000 meters is 10.20 times the length of The QE2, and the length of The QE2 is 0.098 times that amount.(a.k.a. RMS Queen Elizabeth 2)
The QE2 has a total length of 294 m. During its voyaging lifetime from 1969 through 2008, it travelled more than 9,600,000,000 meters, the furthest cumulative distance by any ship in modern history.
It's about thirteen times as tall as The Golden Gate Bridge
In other words, 3,000 meters is 13.20 times the height of The Golden Gate Bridge, and the height of The Golden Gate Bridge is 0.0758 times that amount.(San Francisco, California and Marin County, California) (height above water)
The height of each tower of Golden Gate Bridge is 227 m above the surface of the San Francisco Bay. One of the key designers of the bridge, Charles Ellis, had no engineering degree when he began working on the project, but would later go on to write what became a standard textbook on structural engineering, and would ultimately be forced to complete his calculations on the bridge by working without pay for five months.
It's about sixteen-and-a-half times as tall as The Space Needle
In other words, the height of The Space Needle is 0.0613 times 3,000 meters.(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 seventeen times as tall as St. Paul's Cathedral
In other words, 3,000 meters is 17.20 times the height of St. Paul's Cathedral, and the height of St. Paul's Cathedral is 0.0581 times that amount.(London, England, United Kingdom)
St. Paul's Cathedral measures 174 m to its peak. The southwest tower of the Cathedral contains the bell known as "Great Paul," which is the largest bell in Great Britain at 15,000 kg (16.5 tons), outweighing the more iconic Big Ben bell by about 3,000 kg (3 tons).