It's about one-and-one-tenth times as tall as a Canton Tower
In other words, the height of a Canton Tower is 0.910 times 647 meters.(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 610 m 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-one-fifth times as tall as The CN Tower
In other words, 647 meters is 1.16930 times the height of The CN Tower, and the height of The CN Tower is 0.855210 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 553.33 m 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 Gocta Falls
In other words, 647 meters is 0.8390 times the height of Gocta Falls, and the height of Gocta Falls is 1.190 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 771 m in total height. Although it sits just 42,000 meters 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 one-and-one-fifth times as tall as The Ostankino Tower
In other words, the height of The Ostankino Tower is 0.830 times 647 meters.(a.k.a. Останкинская телебашня) (Moscow, Russia) (to spire)
The Ostankino Tower stands 540 m 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 500 m.
It's about four-fifths as tall as Burj Dubai
In other words, 647 meters is 0.7810 times the height of Burj Dubai, and the height of Burj Dubai is 1.280 times that amount.(formally Burj Khalifa, a.k.a. Dubai Tower, a.k.a. برج خليفة) (Dubai, UAE) (to roof)
Burj Khalifa, the tallest manmade structure in the world, stands 828 m to its roof. The tower also holds the current records for the world's highest Islamic mosque — at approximately 577 m on the 158th floor (of 163 floors) — and the world's tallest outdoor swimming pool — at approximately 285 m on the 78th floor.
It's about one-and-one-third times as tall as The Shanghai World Financial Center
In other words, the height of The Shanghai World Financial Center is 0.7580 times 647 meters.(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 492 m 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 seven-tenths as tall as Olo'upena Falls
In other words, 647 meters is 0.71880 times the height of Olo'upena Falls, and the height of Olo'upena Falls is 1.3910 times that amount.(a.k.a. Oloupena Falls) (Molokai, Hawaii)
Olo'upena Falls rise to 900.1 m in height. The isolated falls are the tallest in the United States and the fourth tallest in the world.