It's about one-and-a-half times as big as a Hockey rink
In other words, 0.220 hectares is 1.45039446 times the size of a Hockey rink, and the size of a Hockey rink is 0.689467609 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 0.1516828740 hectares. 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 one-and-four-fifths times as big as Manchester Cathedral
In other words, 0.220 hectares is 1.777 times the size of Manchester Cathedral, and the size of Manchester Cathedral is 0.5627 times that amount.(a.k.a. Cathedral and Collegiate Church of St Mary, St Denys and St George) (Manchester, England, United Kingdom) (total interior area of Nave, Chapel, Library, Chapter House, and Rectory)
Manchester Cathedral includes a total interior area of 0.12380 hectares between the Nave, Chapel, Library, Chapter House, and Rectory. The height of the Cathedral's bell tower is 41.1 m.
It's about one-and-nine-tenths times as big as Fort Knox
In other words, 0.220 hectares is 1.86 times the size of Fort Knox, and the size of Fort Knox is 0.538 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 0.1180 hectares. 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 half as big as Bill Gates' Home
In other words, 0.220 hectares is 0.4917 times the size of Bill Gates' Home, and the size of Bill Gates' Home is 2.03 times that amount.(Medina, Washington)
One of the largest homes in the world, Bill and Melinda Gates' home has a total area of 0.44740 hectares, including 7 bedrooms, 24 bathrooms, 6 kitchens, 6 fireplaces, a 0.023 hectares gym, a 0.009 hectares dining room, and a 0.019 hectares 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 two-fifths as big as a Football field
In other words, 0.220 hectares is 0.4111215784 times the size of a Football field, and the size of a Football field is 2.432370502 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 0.53512151040 hectares. 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 0.220 hectares.
It's about one-third as big as The White House
In other words, 0.220 hectares is 0.35 times the size of The White House, and the size of The White House is 2.9 times that amount.(Washington, DC) (including wings)
Housing the presidency, the White House occupies six stories and a total of 0.620 hectares 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 one-fourth as big as The Palace of Holyroodhouse
In other words, 0.220 hectares is 0.27 times the size of The Palace of Holyroodhouse, and the size of The Palace of Holyroodhouse is 3.7 times that amount.(a.k.a. Holyrood Palace) (Royal Mile, Old Town, Edinburgh, Scotland, United Kingdom) (Palace without gardens)
The Palace of Holyroodhouse, the residence of the British Monarch in Scotland, measures about 0.810 hectares, on a total grounds area of about 4 hectares. Each year, the Palace hosts a Garden Party, serving 8,000 guests from a 150-meter-long buffet table.