It's about eight times as long as a London bus
In other words, 641.10 hands is 7.77 times the length of a London bus, and the length of a London bus is 0.129 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 82.50 hands 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 one-tenth as tall as The Willis Tower
In other words, 641.10 hands is 0.125 times the height of The Willis Tower, and the height of The Willis Tower is 8 times that amount.(a.k.a. Sears Tower) (Chicago, Illinois) (to antenna peak)
The Willis Tower rises to about 5,120 hands to the top of its tallest antenna. The bathrooms on the 103rd floor are said to be the highest in the western hemisphere at about 4,060 hands.
It's about one-tenth as tall as The Ostankino Tower
In other words, 641.10 hands is 0.12 times the height of The Ostankino Tower, and the height of The Ostankino Tower is 8.3 times that amount.(a.k.a. Останкинская телебашня) (Moscow, Russia) (to spire)
The Ostankino Tower stands 5,300 hands to its spire. The tower has been the tallest structure in Europe since its construction in 1967 and was, at at that time, the only free-standing structure taller than 4,900 hands.
It's about one-tenth as tall as The CN Tower
In other words, 641.10 hands is 0.11772 times the height of The CN Tower, and the height of The CN Tower is 8.4947 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 5,446.20 hands 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-tenth as tall as a Canton Tower
In other words, 641.10 hands is 0.11 times the height of a Canton Tower, and the height of a Canton Tower is 9.1 times that amount.(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 6,000 hands 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 eleven times as tall as a Giraffe
It's about one-tenth as tall as Gocta Falls
In other words, 641.10 hands is 0.085 times the height of Gocta Falls, and the height of Gocta Falls is 11.8 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 7,590 hands in total height. Although it sits just 413,000 hands 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.