It's about one-one-thousand-five-hundredth as big as The Forbidden City.
In other words, the size of The Forbidden City is 1,600 times 51 squares.(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 80,000 squares. 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 4,500 times as big as an Airplane Tray Table.
In other words, 51 squares is 4,690 times the size of an Airplane Tray Table, and the size of an Airplane Tray Table is 0.000213 times that amount.(average)
With wide variation among different models of airplanes, in-flight tray tables measure around 41.2 cm (16.5 in) x 24.1 cm (9.5 in) for a total area of 0.0109 squares. Flight safety rules require that the tray tables be upright and locked during takeoff and landing so as to reduce the risk of passenger abdominal injury.
It's about one-five-thousandth as big as Monaco.
In other words, the size of Monaco is 5,000 times 51 squares.(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 200,000 squares in total area.
It's about one-seven-thousandth as big as Central Park.
In other words, 51 squares is 0.000139 times the size of Central Park, and the size of Central Park is 7,190 times that amount.(Manhattan, New York City, New York)
The most visited park in the country, Central Park has an area of 367,000 squares. According to a 2005 appraisal, the real estate value of the Park's land is $528,783,552,000.
It's about 10,000 times as big as an Apple iPad.
In other words, 51 squares is 11,840 times the size of an Apple iPad, and the size of an Apple iPad is 0.000084460 times that amount.(for 9.7 inch, Apple iPad Air MD785LL/B)
An Apple iPad measures 23 cm (9.4 in) x 17 cm (6.6 in) for a total device area of 0.004308 squares. The base model iPad Air features 16 GB of storage capacity.
It's about one-fifteen-thousandth as big as Crawford Ranch.
In other words, 51 squares is 0.000073960 times the size of Crawford Ranch, and the size of Crawford Ranch is 13,520 times that amount.(a.k.a. Prairie Chapel Ranch, a.k.a. Western White House) (Crawford, Texas)
Crawford Ranch, the private estate of President George W. Bush, is a 689,500 squares estate, which, in addition to the house itself and its outbuildings, features seven canyons, three miles of river frontage and a man-made fish pond.
It's about one-fifteen-thousandth as big as Gibraltar.
In other words, the size of Gibraltar is 14,000 times 51 squares.(British overseas territory) (total area)
The British overseas territory Gibraltar is located at the southern tip of Spain overlooking the Mediterranean Sea at the Strait of Gibraltar and measures of 700,000 squares in total area. It is renowned as the home of the Rock of Gibraltar (a.k.a. Calpe, a.k.a. Jabal al Tariq), a well-known tourist attraction.