It's about 20,000 times as big as Monaco.
In other words, the size of Monaco is 0.0000500 times 31,000,000 dunams.(a.k.a. the Principality of Monaco, a.k.a. Principauté de Monaco, a.k.a. Principatu de Múnegu)
One of the smallest nations in the world, Monaco is a city-state located on the French border of the Mediterranean Sea, which measures 2,000 dunams in total area.
It's about 40,000 times as big as The Forbidden City.
In other words, 31,000,000 dunams is 42,000 times the size of The Forbidden City, and the size of The Forbidden City is 0.0000240 times that amount.(a.k.a. Forbidden Palace, a.k.a. Purple Forbidden City, a.k.a. Zijin Cheng, a.k.a. Zǐjinchéng, a.k.a. 紫禁城) (Beijing, China)
The imperial palace complex of the Forbidden City consists of 980 buildings covering 740 dunams. The City was the home of Chinese Emperors and their cabinets from its construction in 1420 until the fall of the last ruling dynasty in 1912.
It's about 50,000 times as big as Disneyland.
In other words, the size of Disneyland is 0.0000210 times 31,000,000 dunams.(a.k.a. Disneyland Park) (Anaheim, California) (public areas)
The public areas of Disneyland occupy 650 dunams. The park consists of nine themed "stages" — including Main Street, U.S.A; Adventureland; Frontierland; Fantasyland; and Tomorrowland — with hidden passages that allow park employees to move between each without being seen by guests.
It's about 70,000 times as big as Vatican City.
In other words, the size of Vatican City is 0.0000140 times 31,000,000 dunams.(a.k.a. Holy See, a.k.a. State of the Vatican City, a.k.a. Stato della Città del Vaticano)
The world's smallest nation in both area and population, Vatican City is a walled enclave within Rome, Italy measuring 440 dunams in total area. Vatican City has been home to the Papacy since its incorporation in 1929 and the territory has been the home of Popes since 1377.
It's about 80,000 times as big as The Mall of America.
In other words, 31,000,000 dunams is 79,000 times the size of The Mall of America, and the size of The Mall of America is 0.0000130 times that amount.(a.k.a. MOA, a.k.a. MoA, a.k.a. Megamall) (Bloomington, Minnesota) (total area)
The Mall of America contains over 520 stores and 6.92 km (4.3 miles) of total store frontage in an area totaling 390 dunams. At the middle of the mall is a 28 dunams amusement park featuring 27 rides.
It's about 150,000 times as big as Washington National Cathedral.
In other words, the size of Washington National Cathedral is 0.00000770 times 31,000,000 dunams.(a.k.a. Cathedral Church of Saint Peter and Saint Paul) (Washington, DC) (total plot)
Sitting atop the 115 m (377 ft) tall Mount Saint Alban at the corner of Massachusetts and Wisconsin Avenues, Washington National Cathedral sits on a landscaped, 230 dunams plot.
It's about 150,000 times as big as The United States Capitol.
In other words, the size of The United States Capitol is 0.00000770 times 31,000,000 dunams.(Washington, DC) (Immediate grounds size)
The grounds of United States Capitol, at the center of Washington DC's quadrants, consists of about seventeen buildings on a 230 dunams plot. While the Capitol Building is the central feature, other buildings include the Supreme Court Buildings and the Library of Congress Buildings, as well as several monuments and sculptures.