It's about as big as a Football field.
(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 nine-tenths as big as The White House.
In other words, 5.3512151040 dunams is 0.860 times the size of The White House, and the size of The White House is 1.20 times that amount.(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 one-and-one-fifth times as big as Bill Gates' Home.
In other words, 5.3512151040 dunams is 1.1960 times the size of Bill Gates' Home, and the size of Bill Gates' Home is 0.83610 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 half as big as a City Block (Manhattan).
In other words, the size of a City Block (Manhattan) is 2 times 5.3512151040 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.
It's about two-fifths as big as The Great Banyan Tree.
In other words, 5.3512151040 dunams is 0.3720 times the size of The Great Banyan Tree, and the size of The Great Banyan Tree is 2.690 times that amount.(a.k.a. The Great Banyan, a.k.a. Ficus benghalensis) (Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah, West Bengal, India)
The Great Banyan Tree is a single tree in the Indian Botanic Garden in West Bengal with aerial roots covering a total area of about 14.40 dunams. While its exact age is unknown, the tree has been noted in guidebooks for over 200 years.
It's about one-third as big as The Biltmore Estate.
In other words, 5.3512151040 dunams is 0.3280 times the size of The Biltmore Estate, and the size of The Biltmore Estate is 3.05 times that amount.(Asheville, North Carolina) (house only)
The main house of Biltmore Estate covers 16.30 dunams and contains 250 rooms. The fifty-six auxiliary buildings of the estate are interconnected through the nearly 71 km of roads on the Biltmore grounds.
It's about three-tenths as big as The Kennedy Center.
In other words, 5.3512151040 dunams is 0.310 times the size of The Kennedy Center, and the size of The Kennedy Center is 3.20 times that amount.(a.k.a. John F. Kennedy Memorial Center for the Performing Arts) (Washington, DC)
Hosting over 2,000 performances and nearly two million audience members annually — including events and guests for presidential inaugurations and galas — the Kennedy Center is approximately 17 dunams in total area.