It's about three-fourths as tall as The CN Tower.
In other words, 451 yards is 0.74530 times the height of The CN Tower, and the height of The CN Tower is 1.34170 times that amount.(a.k.a. La Tour CN, a.k.a. Canadian National Tower, a.k.a. Canada's National Tower) (Toronto, Canada) (to spire)
The CN Tower measures 605.130 yards tall at its spire. Used only in emergencies and for charitable climbing events, the 2,579-step staircase to the top is the longest metal staircase in the world.
It's about one-and-two-fifths times as long as The QE2.
It's about two-thirds as tall as a Canton Tower.
In other words, the height of a Canton Tower is 1.50 times 451 yards.(a.k.a. Guangzhou TV & Sightseeing Tower, a.k.a. 广 州 电 视 观 光 塔) (Guangzhou, China) (to spire)
The Guangzhou TV & Sightseeing Tower stands 670 yards to its spire. Initially described as holding the record for the tallest Ferris wheel in the world, the ride at the top of the tower is actually an observation carousel; cars complete a trip around the top-floor track about every half-hour.
It's about one-and-four-fifths times as tall as The Golden Gate Bridge.
In other words, 451 yards is 1.820 times the height of The Golden Gate Bridge, and the height of The Golden Gate Bridge is 0.5490 times that amount.(San Francisco, California and Marin County, California) (height above water)
The height of each tower of Golden Gate Bridge is 248 yards 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 half as tall as Gocta Falls.
In other words, 451 yards is 0.5350 times the height of Gocta Falls, and the height of Gocta Falls is 1.870 times that amount.(a.k.a. Gocta Cataracts, a.k.a. Catarata del Gocta) (Amazonas, Peru) (total height)
Gocta Falls, a waterfall on the Cocahuayco River, measures 843 yards in total height. Although it sits just 45,900 yards from the major city of Chachapoyas, the waterfall was unknown to non-locals until it was documented during a 2005 expedition by a German economist.
It's about half as long as The Navy Pier.
In other words, the length of The Navy Pier is 2 times 451 yards.(a.k.a. Municipal Pier #2) (Chicago, Illinois)
The Navy Pier is 1,000 yards in total length. Originally named Municipal Pier #2, the pier was renamed Navy Pier in 1927 in honor of Naval personnel stationed there during World War I.
It's about half as tall as The Three Sisters Falls.
In other words, the height of The Three Sisters Falls is 2 times 451 yards.(a.k.a. Cataratas las Tres Hermanas) (Ayacucho, Peru)
The Three Sisters Falls rise to 1,000 yards in height. The falls are called Three Sisters after the three large tiers over which the falls flow.