It's about as tall as The Shanghai World Financial Center.
It's about as tall as The Taipei 101 (skyscraper).
In other words, the height of The Taipei 101 (skyscraper) is 1.03 times 646 paces.(a.k.a. Taipei Financial Center, a.k.a. 台北101, a.k.a. 臺北101) (Xinyi District, Taipei, Taiwan) (to spire)
The Taipei 101 reaches 667 paces to its spire. The tower itself is said to be the style in world's tallest sundial, with the circular area of the adjacent Millennium Park acting as the sundial's face.
It's about nine-tenths as tall as The Sears Tower.
In other words, 646 paces is 0.934 times the height of The Sears Tower, and the height of The Sears Tower is 1.07 times that amount.(a.k.a. Willis Tower) (Chicago, Illinois) (to antenna peak)
The Willis Tower rises to 692 paces to the top of its tallest antenna. The bathrooms on the 103rd floor are said to be the highest in the western hemisphere at 541 paces.
It's about one-and-one-tenth times as tall as The Petronas Twin Towers.
In other words, 646 paces is 1.089 times the height of The Petronas Twin Towers, and the height of The Petronas Twin Towers is 0.9183 times that amount.(a.k.a. Menara Berkembar Petronas, a.k.a. Petronas Towers) (Kuala Lumpur, Malaysia) (to spire)
Each of the Petronas Towers stands 593 paces to their spires. Holding the record as the tallest buildings in the world from 1998 to 2004, the towers continue to hold the record for the deepest foundation barrettes — up to 150.9 paces deep.
It's about nine-tenths as tall as The Ostankino Tower.
In other words, 646 paces is 0.91 times the height of The Ostankino Tower, and the height of The Ostankino Tower is 1.1 times that amount.(a.k.a. Останкинская телебашня) (Moscow, Russia) (to spire)
The Ostankino Tower stands 710 paces 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 660 paces.
It's about nine-tenths as tall as The CN Tower.
In other words, 646 paces is 0.88962 times the height of The CN Tower, and the height of The CN Tower is 1.1241 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 726.15 paces 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 four-fifths as tall as a Canton Tower.
In other words, 646 paces is 0.81 times the height of a Canton Tower, and the height of a Canton Tower is 1.2 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 800 paces 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.