It's about four-fifths as big as Bill Gates' Home.
In other words, 407.2 squares is 0.8456 times the size of Bill Gates' Home, and the size of Bill Gates' Home is 1.183 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 seven-tenths as big as a Football field.
In other words, 407.2 squares is 0.7069444444 times the size of a Football field, and the size of a Football field is 1.414538311 times that amount.(American) (per NFL regulation)
It's about three-fifths as big as The White House.
In other words, 407.2 squares is 0.61 times the size of The White House, and the size of The White House is 1.6 times that amount.(Washington, DC) (including wings)
It's about two-and-a-half times as big as a Hockey rink.
In other words, 407.2 squares is 2.49402697 times the size of a Hockey rink, and the size of a Hockey rink is 0.400957974 times that amount.(per NHL specification)
It's about two-fifths as big as a City Block (Manhattan).
In other words, the size of a City Block (Manhattan) is 3 times 407.2 squares.(per Bridges, William - 1811 Commissioner's Plan for New York City) (approximate)
It's about three times as big as Fort Knox.
In other words, 407.2 squares is 3.21 times the size of Fort Knox, and the size of Fort Knox is 0.312 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 one-fourth as big as The Great Banyan Tree.
In other words, 407.2 squares is 0.263 times the size of The Great Banyan Tree, and the size of The Great Banyan Tree is 3.8 times that amount.(a.k.a. The Great Banyan, a.k.a. Ficus benghalensis) (Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah, West Bengal, India)