It's about as big as The Lincoln Memorial Reflecting Pool.
In other words, the size of The Lincoln Memorial Reflecting Pool is 1.04 times 30.16 dunams.(Washington, D.C.) (pool surface area)
It's about three-fifths as big as a Polo field.
In other words, 30.16 dunams is 0.60118433 times the size of a Polo field, and the size of a Polo field is 1.66338334 times that amount.(for field polo) (United States Polo Association rules; unboarded side maximum)
It's about three-fifths as big as Windsor Castle.
In other words, 30.16 dunams is 0.57 times the size of Windsor Castle, and the size of Windsor Castle is 1.8 times that amount.(Windsor, England) (total site area)
It's about one-and-four-fifths times as big as The Kennedy Center.
In other words, the size of The Kennedy Center is 0.56 times 30.16 dunams.(a.k.a. John F. Kennedy Memorial Center for the Performing Arts) (Washington, DC)
It's about one-and-nine-tenths times as big as The Biltmore Estate.
In other words, 30.16 dunams is 1.85 times the size of The Biltmore Estate, and the size of The Biltmore Estate is 0.541 times that amount.(Asheville, North Carolina) (house only)
The main house of Biltmore Estate covers 16.3 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 two times as big as The Great Banyan Tree.
In other words, 30.16 dunams is 2.09 times the size of The Great Banyan Tree, and the size of The Great Banyan Tree is 0.478 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)
It's about two-fifths as big as Buckingham Palace.
In other words, 30.16 dunams is 0.39 times the size of Buckingham Palace, and the size of Buckingham Palace is 2.6 times that amount.(a.k.a. Buckingham House) (Westminster, London, England)