It's about as big as Buckingham Palace
(a.k.a. Buckingham House) (Westminster, London, England)
Buckingham Palace, the official residence of the British monarch, contains about 19 acres of total floor space. The palace was first inhabited by Queen Victoria in 1831, although after the death of her husband in 1861, the Queen endeavored to spend as little time there as public opinion would allow.
It's about nine-tenths as big as Alcatraz
In other words, 19 acres is 0.86 times the size of Alcatraz, and the size of Alcatraz is 1.2 times that amount.(a.k.a. The Rock) (California)
Alcatraz Island measures 22 acres. It is known a part of the Golden Gate National Recreation Area, and has historically served as a lighthouse, fort, military prison, and — most famously — a federal prison.
It's about one-and-one-fifth times as big as Croke Park
In other words, 19 acres is 1.2 times the size of Croke Park, and the size of Croke Park is 0.83 times that amount.(a.k.a. Páirc an Chrócaigh) (Dublin, Leinster, Ireland) (stadium area)
Croke Park, the Gaelic games stadium of Dublin, hosts hurling and Gaelic football matches in a 16 acres stadium. The Park offers rooftop tours, where fans can walk along the 44-meters-high walkway.
It's about three-fourths as big as King Shaka International Airport (DUR)
In other words, 19 acres is 0.747 times the size of King Shaka International Airport (DUR), and the size of King Shaka International Airport (DUR) is 1.34 times that amount.(a.k.a. KSIA) (La Mercy, Durban City, eThekwini Municipality, KwaZulu-Natal, South Africa) (total terminal area)
King Shaka International Airport includes a main passenger terminal, with a total area of 25.50 acres. The airport's single, main runway stretches 3,700 m in length. http://www.durban-tourism.com/King-Shaka.html - 21 sq. km land purchase??
It's about seven-tenths as big as Ellis Island
In other words, 19 acres is 0.693 times the size of Ellis Island, and the size of Ellis Island is 1.44 times that amount.(Jersey City, New Jersey and New York City, New York)(now officially part of the Statue of Liberty National Monument)
Ellis Island, home of the Ellis Island Immigration Station, is 27.40 acres in total area. Nine-tenths of the island were artificially created after the New York-New Jersey borders had already been defined, leading to a sovereignty dispute which was settled by the US Supreme Court in 1998.
It's about one-and-a-half times as big as Rogers Centre
In other words, 19 acres is 1.5 times the size of Rogers Centre, and the size of Rogers Centre is 0.667 times that amount.(f.k.a. Skydome) (Toronto, Ontario, Canada) (entire complex)
Rogers Centre, a major sports stadium in downtown Toronto, measures a total of 12.70 acres over the entire complex. The video board of Rogers Centre has a total area of 0.084 acres.
It's about one-and-a-half times as big as Windsor Castle
In other words, 19 acres is 1.5 times the size of Windsor Castle, and the size of Windsor Castle is 0.67 times that amount.(Windsor, England) (total site area)
One of the official residences of the British monarch, Windsor Castle measures about 13 acres. It is the largest inhabited castle in the world and is also the oldest in continuous use, having been occupied since it was built by William the Conqueror about 900 years ago.