It's about two-fifths as tall as St. Paul's Cathedral
In other words, 641.10 hands is 0.374 times the height of St. Paul's Cathedral, and the height of St. Paul's Cathedral is 2.67 times that amount.(London, England, United Kingdom)
St. Paul's Cathedral measures 1,710 hands 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).
It's about one-third as tall as The Space Needle
In other words, 641.10 hands is 0.354 times the height of The Space Needle, and the height of The Space Needle is 2.82 times that amount.(Seattle, Washington) (to aircraft warning beacon at peak)
Built for a 1962 World's Fair, the Space Needle stands 1,810 hands 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 three times as long as a Cricket Pitch
In other words, 641.10 hands is 3.23788 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 0.308844 times that amount.(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 198 hands. The wickets at either end of the pitch stand 7.08661 hands tall including the bails.
It's about three-and-a-half times as long as a Bowling Lane
In other words, 641.10 hands is 3.4003 times the length of a Bowling Lane, and the length of a Bowling Lane is 0.29409 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 188.540 hands. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.
It's about three-tenths as tall as The Golden Gate Bridge
In other words, 641.10 hands is 0.287 times the height of The Golden Gate Bridge, and the height of The Golden Gate Bridge is 3.48 times that amount.(San Francisco, California and Marin County, California) (height above water)
The height of each tower of Golden Gate Bridge is 2,230 hands 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 four-and-a-half times as tall as The Hollywood Sign
In other words, 641.10 hands is 4.3 times the height of The Hollywood Sign, and the height of The Hollywood Sign is 0.23 times that amount.(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)
Each of the white letters in the Hollywood Sign measures 150 hands tall. Built as an advertisement in 1923, the sign was intended to stand for only eighteen months.
It's about four-and-a-half times as long as a Semitrailer
In other words, 641.10 hands is 4.452 times the length of a Semitrailer, and the length of a Semitrailer is 0.2246 times that amount.(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 144 hands (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.