It's about 200,000,000 times as big as Fort Knox
In other words, 253,336,000 dunams is 215,000,000 times the size of Fort Knox, and the size of Fort Knox is 0.000000004650 times that amount.(a.k.a. the United States Bullion Depository, a.k.a. "Gold Vault") (Kentucky)
The United States Bullion Depository, commonly referred to by the metonym "Fort Knox" (in spite of the fact that the Depository is not located on the Fort proper), measures 32.0 m (105 ft) by 36.9 m (121 ft), for a total area of about 1.180 dunams. The Depository is most famous for housing the largest portion of the national gold reserve, but has also temporarily housed the original US Declaration of Independence, an original copy of the US Constitution, and other important documents, kept there for safe keeping during World War II.
It's about 500,000,000 times as big as a Basketball court
In other words, 253,336,000 dunams is 511,131,398.20 times the size of a Basketball court, and the size of a Basketball court is 0.0000000019564440840 times that amount.(per NBA regulation)
Per NBA rules , a basketball court should measure 29.5656 m long by 16.764 m wide, for a total area of 0.49563771840 dunams. The first basketball game, held in a Springfield Massachusetts YMCA, was played on a court half the size of today's NBA standard and ended with a score of 1-0.
It's about 700,000,000 times as big as an IMAX screen
In other words, 253,336,000 dunams is 715,200,000 times the size of an IMAX screen, and the size of an IMAX screen is 0.0000000013980 times that amount.(standard)
An IMAX movie theater screen measures 22 m (72 ft) by 16 m (52 ft) for a total area of 0.35420 dunams. Because the film used in an IMAX movie is more than eight times larger than regular film, the platters of a two-and-a-half hour feature film can weigh up to 250 kg (550 lbs).
It's about 950,000,000 times as big as a Tennis court
In other words, 253,336,000 dunams is 971,113,240 times the size of a Tennis court, and the size of a Tennis court is 0.0000000010297460 times that amount.(per ITF specification; for doubles)
Per International Tennis Federation Rules of Tennis 2009, a doubles tennis court should measure 23.7744 m long by 10.9728 m, for a total area of about 0.260760 dunams. Courts may be surfaced with crushed red stone, shale, brick, hard-soil grass, or asphalt.
It's about 15,000,000,000 times as big as a Parking Space
In other words, 253,336,000 dunams is 16,900,000,000 times the size of a Parking Space, and the size of a Parking Space is 0.00000000005920 times that amount.(a.k.a Parking Stall) (average; surface lot; North America)
An average-size parking space in a North American surface lot measures 0.015 dunams. Due to the high real estate prices at the time, parking spaces in a densely-populated part of Manhattan would sell for an average of $165,000 in 2007, with some spaces fetching up to $225,000.
It's about 65,000,000,000 times as big as a King Size Bed
In other words, 253,336,000 dunams is 62,900,000,000 times the size of a King Size Bed, and the size of a King Size Bed is 0.00000000001590 times that amount.(North American/Australian standard; length; mattress only)
A King-Size mattress measures 0.00403 dunams in total area. Although most antique beds were smaller than modern beds, it was not uncommon for beds in the medieval Europe to reach 0.005 dunams for those in positions of wealth or power.
It's about 250,000,000,000 times as big as a Bath Towel
In other words, 253,336,000 dunams is 233,750,000,000 times the size of a Bath Towel, and the size of a Bath Towel is 0.00000000000427810 times that amount.(for Fieldcrest Luxury Solid Towels)
Bath towels typically measure 142.24 cm (56 in) by 76.2 cm (30 in), for a total area of about 0.0010838 dunams. The city of Bursa, Turkey is known as the birthplace of the modern towel.