It's about one-and-seven-tenths times as big as a Hockey rink.
In other words, 276.4 squares is 1.69290043 times the size of a Hockey rink, and the size of a Hockey rink is 0.590702195 times that amount.(per NHL specification)
Per National Hockey League Official Rules, a hockey rink should measure 60.96 m long by 25.908 m wide with a corner arc radius of 8.5344 m, for a total area of about 163.270087 squares. Ice hockey is believed to have developed from field hockey after players began holding games on ice rinks, which had been traditionally used for the sport of curling.
It's about three-fifths as big as Bill Gates' Home.
In other words, 276.4 squares is 0.5739 times the size of Bill Gates' Home, and the size of Bill Gates' Home is 1.742 times that amount.(Medina, Washington)
One of the largest homes in the world, Bill and Melinda Gates' home has a total area of 481.6 squares, including 7 bedrooms, 24 bathrooms, 6 kitchens, 6 fireplaces, a 24.76 squares gym, a 9.688 squares dining room, and a 20.45 squares library. It was designed by Bohlin Cywinski Jackson, the same architectural firm responsible for the design of one of Apple Inc's flagship stores on Fifth Avenue in New York City.
It's about half as big as a Football field.
In other words, 276.4 squares is 0.4798611111 times the size of a Football field, and the size of a Football field is 2.083936324 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 576 squares. 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 236.8060292 squares.
It's about two times as big as Fort Knox.
In other words, 276.4 squares is 2.18 times the size of Fort Knox, and the size of Fort Knox is 0.459 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 127 squares. 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 two-fifths as big as The White House.
In other words, 276.4 squares is 0.41 times the size of The White House, and the size of The White House is 2.4 times that amount.(Washington, DC) (including wings)
Housing the presidency, the White House occupies six stories and a total of 670 squares 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 three-tenths as big as a City Block (Manhattan).
In other words, the size of a City Block (Manhattan) is 3 times 276.4 squares.(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 1,000 squares. 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 five times as big as a Basketball court.
In other words, 276.4 squares is 5.180880975 times the size of a Basketball court, and the size of a Basketball court is 0.1930173661 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 53.35 squares. 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.