It's about as long as The Navy Pier
(a.k.a. Municipal Pier #2) (Chicago, Illinois)
The Navy Pier is 800 ells in total length. Originally named Municipal Pier #2, the pier was renamed Navy Pier in 1927 in honor of Naval personnel stationed there during World War I.
It's about as tall as The Three Sisters Falls
(a.k.a. Cataratas las Tres Hermanas) (Ayacucho, Peru)
The Three Sisters Falls rise to 800 ells in height. The falls are called Three Sisters after the three large tiers over which the falls flow.
It's about one-and-one-tenth times as tall as Olo'upena Falls
In other words, 800 ells is 1.016 times the height of Olo'upena Falls, and the height of Olo'upena Falls is 0.98430 times that amount.(a.k.a. Oloupena Falls) (Molokai, Hawaii)
Olo'upena Falls rise to 787.50 ells in height. The isolated falls are the tallest in the United States and the fourth tallest in the world.
It's about as tall as Tugela Falls
In other words, the height of Tugela Falls is 1.04 times 800 ells.(Royal Natal National Park, KwaZulu-Natal, South Africa)
Tugela Falls rises to 829 ells in height. The falls are the highest in Africa and the second highest in the world.
It's about nine-tenths as tall as Angel Falls
In other words, 800 ells is 0.9340 times the height of Angel Falls, and the height of Angel Falls is 1.07 times that amount.(a.k.a. Parakupa-vena, a.k.a. Kerepakupai mer&) (Auyantepui, Canaima National Park, Venezuela) (total height)
Angel Falls has a total height 857 ells. Jimmie Angel, the first person to publicize their existence outside Venezuela and the namesake of the falls, damaged his monoplane atop the falls and was forced to abandon it; it remained there until it was removed 33 years later.
It's about one-and-one-tenth times as tall as Burj Dubai
In other words, the height of Burj Dubai is 0.9090 times 800 ells.(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 724 ells to its roof. The tower also holds the current records for the world's highest Islamic mosque — at approximately 505 ells on the 158th floor (of 163 floors) — and the world's tallest outdoor swimming pool — at approximately 249 ells on the 78th floor.
It's about one-and-one-fifth times as tall as Gocta Falls
In other words, 800 ells is 1.190 times the height of Gocta Falls, and the height of Gocta Falls is 0.840 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 675 ells in total height. Although it sits just 36,700 ells 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.