It's about one-thirtieth as big as Oregon's Armillaria ostoyae.
In other words, 329.5 dunams is 0.0341 times the size of Oregon's Armillaria ostoyae, and the size of Oregon's Armillaria ostoyae is 29.3 times that amount.(a.k.a. Shoestring Rot) (Malheur National Forest, near John Day, Oregon) (if considered single organism)
The Armillaria ostoyae fungus of Malheur National Forest is a giant fungus measuring 9,650 dunams in area. The fungus, which pathologists estimate is between 2,000 and 8,500 years old, began as a microscopic spore and is now considered the largest organism in the world.
It's about thirty times as big as a City Block (Manhattan).
In other words, the size of a City Block (Manhattan) is 0.03 times 329.5 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 one-thirty-fifth as big as Mackinac Island.
In other words, 329.5 dunams is 0.029141 times the size of Mackinac Island, and the size of Mackinac Island is 34.316 times that amount.(Michigan)
Mackinac Island measures 11,310 dunams 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-thirty-fifth as big as Tokelau.
In other words, the size of Tokelau is 37 times 329.5 dunams.(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 12,000 dunams. 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.
It's about one-fortieth as big as LAX.
In other words, the size of LAX is 42 times 329.5 dunams.(a.k.a. Los Angeles International Airporta, a.k.a. KLAX) (total land area) (2012 figures)
Including nine passenger terminals and several other administrative and cargo facilities, LAX sits on 14,000 dunams of land. In 2014, LAX serviced almost 71 million passengers, 600,000 planes, and over 1.9 million tons of freight.
It's about 55 times as big as The White House.
In other words, the size of The White House is 0.019 times 329.5 dunams.(Washington, DC) (including wings)
Housing the presidency, the White House occupies six stories and a total of 6.2 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 60 times as big as a Football field.
In other words, 329.5 dunams is 61.57480004 times the size of a Football field, and the size of a Football field is 0.01624041003 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 5.351215104 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 2.2 dunams.