It's about ten times as big as Alcatraz
In other words, 211.50 feddans is 10 times the size of Alcatraz, and the size of Alcatraz is 0.1 times that amount.(a.k.a. The Rock) (California)
Alcatraz Island measures 21 feddans. It is known a part of the Golden Gate National Recreation Area, and has historically served as a lighthouse, fort, military prison, and — most famously — a federal prison.
It's about one-tenth as big as Sydney Kingsford Smith Airport (SYD)
In other words, 211.50 feddans is 0.1 times the size of Sydney Kingsford Smith Airport (SYD), and the size of Sydney Kingsford Smith Airport (SYD) is 10 times that amount.(a.k.a. Mascot Airport, a.k.a. Kingsford Smith Airport, a.k.a. Sydney Airport) (Sydney, New South Wales, Australia) (total site area)
Sydney Kingston Smith Airport covers a total area of about 2,000 feddans, including three main terminals. The airport offers 8,930 m of total runway length.
It's about one-tenth as big as Boracay Island
In other words, 211.50 feddans is 0.0861 times the size of Boracay Island, and the size of Boracay Island is 11.62 times that amount.(Malay, Aklan, Philippines)
Frequently called "the best island in the world," Boracay Island measures 2,457 feddans. The most famous destination of the Island is the 4-km-long White Beach.
It's about twelve times as big as Buckingham Palace
In other words, 211.50 feddans is 12 times the size of Buckingham Palace, and the size of Buckingham Palace is 0.08 times that amount.(a.k.a. Buckingham House) (Westminster, London, England)
Buckingham Palace, the official residence of the British monarch, contains about 18 feddans of total floor space. The palace was first inhabited by Queen Victoria in 1831, although after the death of her husband in 1861, the Queen endeavored to spend as little time there as public opinion would allow.
It's about one-tenth as big as Dublin International Airport (DUB)
In other words, 211.50 feddans is 0.0820 times the size of Dublin International Airport (DUB), and the size of Dublin International Airport (DUB) is 12.2 times that amount.(a.k.a. Aerfort Bhaile Átha Cliath) (Collinstown, Leinster, Ireland) (total site area)
Dublin International Airport covers a total area of 2,580 feddans, including two passenger terminals, outbuildings, and two main runways. The total length of both runways is 4,709 m.
It's about one-fifteenth as big as Mackinac Island
In other words, 211.50 feddans is 0.07858 times the size of Mackinac Island, and the size of Mackinac Island is 12.726 times that amount.(Michigan)
Mackinac Island measures 2,692.30 feddans in total land area. The island is located in Lake Huron and is known as a historically-cultured tourist destination and summer colony, home to the well-known Victorian Grand Hotel.
It's about one-fifteenth as big as Tokelau
In other words, 211.50 feddans is 0.07 times the size of Tokelau, and the size of Tokelau is 14 times that amount.(a.k.a. Tokelau Islands, a.k.a. The Union Islands) (New Zealand Territory) (total area)
Tokelau, a territory consisting of three coral atolls under the sovereignty of New Zealand, measures 2,900 feddans. With exports consisting of small crafts and small-scale agriculture, most of which is traded only with New Zealand, Tokelau has the smallest economy of any country in the world.