It's about one-third as big as Hawaii (Island).
In other words, 3,500,000 dunams is 0.335490 times the size of Hawaii (Island), and the size of Hawaii (Island) is 2.980710 times that amount.(a.k.a. Hawaii, a.k.a. The Big Island) (Hawaii)
The largest of the main Hawaiian Islands and the largest island in the United States, Hawaii measures 10,432,500 dunams in total area. It is known for its continuously erupting (for the past two decades, as of 2011) volcano, Kīlauea, and for the black sand beaches formed by the lava flow.
It's about three-and-a-half times as big as San Antonio.
In other words, 3,500,000 dunams is 3.3140 times the size of San Antonio, and the size of San Antonio is 0.30180 times that amount.(Texas)
The second-largest city in Texas and the seventh-largest in the United States as of 2009, San Antonio measures 1,056,000 dunams in total area. The city is known for its tourist attractions, including the Alamo Mission and the annual San Antonio Stock Show and Rodeo.
It's about three-and-a-half times as big as Badlands National Park.
In other words, 3,500,000 dunams is 3.550 times the size of Badlands National Park, and the size of Badlands National Park is 0.2820 times that amount.(Jackson, Pennington, and Shannon Counties, South Dakota, near Rapid City, South Dakota)
Famous for its buttes, pinnacles, spires and grass prairies, the Badlands National Park occupies 987,000 dunams, of which 64,144 acres is a designated Wilderness Area. The site is renown for its large caches of fossils from large North American mammals dating back the Oligocene epoch - about 33 million years ago.
It's about three-tenths as big as Sitka.
In other words, 3,500,000 dunams is 0.2786540 times the size of Sitka, and the size of Sitka is 3.588680 times that amount.(a.k.a. the City and Borough of Sitka) (Alaska)
The second-largest city in both Alaska and the United States, Sitka measures 12,560,380 dunams in total area. The city is known as a major west coast seaport.
It's about three-and-a-half times as big as Indianapolis.
In other words, 3,500,000 dunams is 3.7380 times the size of Indianapolis, and the size of Indianapolis is 0.26750 times that amount.(Indiana) (Metropolitan Statistical Area)
The capital of and largest city in Indiana as of 2009, Indianapolis measures 936,300 dunams in total area. The city is known for its sports tourism, including the Indianapolis 500 and Brickyard 400 auto races, and the Men's and Women's NCAA basketball tournaments.
It's about one-fourth as big as Glacier Bay National Park.
In other words, 3,500,000 dunams is 0.26340 times the size of Glacier Bay National Park, and the size of Glacier Bay National Park is 3.7970 times that amount.(a.k.a. Glacier Bay National Park and Preserve) (Hoonah-Angoon Census area, and Yakutat City and Borough, Alaska)
Containing nine tidewater glaciers, Glacier Bay National Park covers 13,290,000 dunams of which 10,760,000 dunams is designated a Wilderness Area. Glacier Bay is home to the 33.8 km (21 mi) long Margerie Glacier.
It's about four times as big as Dallas.
In other words, 3,500,000 dunams is 3.9450 times the size of Dallas, and the size of Dallas is 0.25350 times that amount.(Texas)
The third-largest city in Texas and the ninth-largest in the United States as of 2009, Dallas measures 887,100 dunams in total area. The city is known as a strong industrial, commerce, and banking center, and as an "inland port," due to its metropolitan airport, Dallas-Fort Worth International.