
It's about as tall as The Sears Tower.
In other words, the height of The Sears Tower is 1.01 times 688 paces.
(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 oneandonetenth times as tall as The Taipei 101 (skyscraper).
In other words, 688 paces is 1.03 times the height of The Taipei 101 (skyscraper), and the height of The Taipei 101 (skyscraper) is 0.9710 times that amount.
(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 as tall as The Ostankino Tower.
In other words, the height of The Ostankino Tower is 1 times 688 paces.
(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 freestanding structure taller than 660 paces.
It's about ninetenths as tall as The CN Tower.
In other words, 688 paces is 0.947460 times the height of The CN Tower, and the height of The CN Tower is 1.0555 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 726.150 paces tall at its spire. Used only in emergencies and for charitable climbing events, the 2,579step staircase to the top is the longest metal staircase in the world.
It's about oneandonetenth times as tall as The Shanghai World Financial Center.
In other words, 688 paces is 1.07 times the height of The Shanghai World Financial Center, and the height of The Shanghai World Financial Center is 0.9350 times that amount.
(上海环球金融中 上海環球金融中心, Shànghǎi huánqiú jīnróng zhōngxīn) (a.k.a. SWFC) (Shanghai, China) (to spire)The Shanghai World Financial Center is 646 paces tall to its roof. It is home to both the world's highest hotel (on its 79th through 93rd floors) and the world's tallest observation deck (on its 100
It's about oneandonefifth times as tall as The Petronas Twin Towers.
In other words, 688 paces is 1.160 times the height of The Petronas Twin Towers, and the height of The Petronas Twin Towers is 0.86210 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 150.90 paces deep.
It's about ninetenths as tall as a Canton Tower.
In other words, 688 paces is 0.860 times the height of a Canton Tower, and the height of a Canton Tower is 1.20 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 topfloor track about every halfhour. 
