It's about one-and-a-half times as big as a Hockey rink.
In other words, 2.20 dunams is 1.450394460 times the size of a Hockey rink, and the size of a Hockey rink is 0.6894676090 times that amount.(per NHL specification)
Per National Hockey League Official Rules, a hockey rink should measure 60.96 m long by 25.908 m wide with a corner arc radius of 8.5344 m, for a total area of about 1.516828740 dunams. Ice hockey is believed to have developed from field hockey after players began holding games on ice rinks, which had been traditionally used for the sport of curling.
It's about one-and-nine-tenths times as big as Fort Knox.
In other words, 2.20 dunams is 1.860 times the size of Fort Knox, and the size of Fort Knox is 0.5380 times that amount.(a.k.a. the United States Bullion Depository, a.k.a. "Gold Vault") (Kentucky)
The United States Bullion Depository, commonly referred to by the metonym "Fort Knox" (in spite of the fact that the Depository is not located on the Fort proper), measures 32.0 m (105 ft) by 36.9 m (121 ft), for a total area of about 1.180 dunams. The Depository is most famous for housing the largest portion of the national gold reserve, but has also temporarily housed the original US Declaration of Independence, an original copy of the US Constitution, and other important documents, kept there for safe keeping during World War II.
It's about half as big as Bill Gates' Home.
In other words, 2.20 dunams is 0.49170 times the size of Bill Gates' Home, and the size of Bill Gates' Home is 2.034 times that amount.(Medina, Washington)
One of the largest homes in the world, Bill and Melinda Gates' home has a total area of 4.4740 dunams, including 7 bedrooms, 24 bathrooms, 6 kitchens, 6 fireplaces, a 0.230 dunams gym, a 0.09 dunams dining room, and a 0.190 dunams library. It was designed by Bohlin Cywinski Jackson, the same architectural firm responsible for the design of one of Apple Inc's flagship stores on Fifth Avenue in New York City.
It's about two-fifths as big as a Football field.
In other words, 2.20 dunams is 0.41112157840 times the size of a Football field, and the size of a Football field is 2.4323705020 times that amount.(American) (per NFL regulation)
Per NFL rules, a football field should measure 109.728 m (120 yards) long by 48.768 m wide, for a total area of 5.3512151040 dunams. Due to a blizzard, the first NFL playoff game in 1932 was held indoors in Chicago Stadium (it was also the first indoor game) on a field measuring just 55 m by 40.0 m, for a total area of 2.20 dunams.
It's about one-third as big as The White House.
In other words, the size of The White House is 2.90 times 2.20 dunams.(Washington, DC) (including wings)
Housing the presidency, the White House occupies six stories and a total of 6.20 dunams of floor space. This space includes 132 rooms, 35 bathrooms, 28 fireplaces, and 3 elevators, as well as a tennis court, bowling alley, movie theater, jogging track, swimming pool, and putting green.
It's about four-and-a-half times as big as a Basketball court.
In other words, 2.20 dunams is 4.4387259450 times the size of a Basketball court, and the size of a Basketball court is 0.2252898720 times that amount.(per NBA regulation)
Per NBA rules , a basketball court should measure 29.5656 m long by 16.764 m wide, for a total area of 0.49563771840 dunams. The first basketball game, held in a Springfield Massachusetts YMCA, was played on a court half the size of today's NBA standard and ended with a score of 1-0.
It's about one-fifth as big as a City Block (Manhattan).
In other words, the size of a City Block (Manhattan) is 5 times 2.20 dunams.(per Bridges, William - 1811 Commissioner's Plan for New York City) (approximate)
A Manhattan city block measures about 200 m between the Northeast-Southwest streets by about 60 m between the Northwest-Southeast streets for a total area of about 10 dunams. There are roughly 2,000 blocks within the city, representing one of the most prolific applications of the city planning grid plan in history.