It's about as big as The Kennedy Center.
(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.
It's about one-and-one-tenth times as big as The Biltmore Estate.
In other words, 17 dunams is 1.04 times the size of The Biltmore Estate, and the size of The Biltmore Estate is 0.9620 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 one-and-one-fifth times as big as The Great Banyan Tree.
In other words, 17 dunams is 1.180 times the size of The Great Banyan Tree, and the size of The Great Banyan Tree is 0.8470 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 half as big as The Lincoln Memorial Reflecting Pool.
In other words, 17 dunams is 0.540 times the size of The Lincoln Memorial Reflecting Pool, and the size of The Lincoln Memorial Reflecting Pool is 1.850 times that amount.(Washington, D.C.) (pool surface area)
The Lincoln Memorial Reflecting Pool has a water surface area of 31.50 dunams. The Pool has a sloping bottom and extends to 80 cm (30 in) in depth at its center.
It's about two times as big as a City Block (Manhattan).
In other words, the size of a City Block (Manhattan) is 0.50 times 17 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-and-a-half times as big as The White House.
In other words, the size of The White House is 0.370 times 17 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 one-third as big as a Polo field.
In other words, 17 dunams is 0.3388638460 times the size of a Polo field, and the size of a Polo field is 2.951037750 times that amount.(for field polo) (United States Polo Association rules; unboarded side maximum)
An outdoor polo field must measure 274.32 m in length and 146.304 m to in width for a total playing area of up to 50.16764160 dunams. Polo traces its origins to an Iranian (then Persian) war game from the 5th Century, which was played with as many as 100 players per side.