How big is 12.5 square kilometers?
It's about one-one-hundred-fiftieth as big as Stewart Island
The size of Stewart Island is about 1,680 square kilometers.
(a.k.a. Rakiura) (Southland, New Zealand) (total land area)
Stewart Island, New Zealand's third-largest island measures 1,680 sq. km. Eighty-five percent of the Island, or about 1,400 sq. km, is Rakiura National Park, which opened in 2002.
It's about 150 times as big as Alcatraz
The size of Alcatraz is about 0.089 square kilometers.
(a.k.a. The Rock) (California)
Alcatraz Island measures 0.089 sq. km. 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 150 times as big as Buckingham Palace
The size of Buckingham Palace is about 0.077 square kilometers.
(a.k.a. Buckingham House) (Westminster, London, England)
Buckingham Palace, the official residence of the British monarch, contains about 0.077 square kilometers 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 200 times as big as Croke Park
The size of Croke Park is about 0.065 square kilometers.
(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 0.065 square kilometers stadium. The Park offers rooftop tours, where fans can walk along the 44-meters-high walkway.
It's about one-two-hundredth as big as Cape Town
The size of Cape Town is about 2,461 square kilometers.
(a.k.a. Kaapstad, a.k.a. iKapa, a.k.a. The Mother City) (Western Cape, South Africa) (for Cape Town metro area)
Cape Town, South Africa's legislative capital, measures 2,461 sq. km in total metro area. The core of Cape Town lies at the base of Table Mountain (a.k.a. Huriǂoaxa, a.k.a. Tafelberg), a 1,084.6 m peak.
It's about 250 times as big as Windsor Castle
The size of Windsor Castle is about 0.053 square kilometers.
(Windsor, England) (total site area)
One of the official residences of the British monarch, Windsor Castle measures about 0.053 square kilometers. 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.
It's about one-two-hundred-fiftieth as big as Yosemite National Park
The size of Yosemite National Park is about 3,026.870 square kilometers.
(Tuolumne, Mariposa, and Madera counties, California, near Mariposa, California) (total land area)
Famous for its granite cliffs and Giant Sequoia groves, Yosemite National Park is 3,026.87 sq. km in total area, of which 20 sq. km is the well-known Yosemite Valley. The Park is known as the home of Yosemite Falls — the highest waterfall in North America and sixth highest in the world at 739 m (2,420 ft)
It's about 250 times as big as Rogers Centre
The size of Rogers Centre is about 0.0514 square kilometers.
(f.k.a. Skydome) (Toronto, Ontario, Canada) (entire complex)
Rogers Centre, a major sports stadium in downtown Toronto, measures a total of 0.0514 square kilometers over the entire complex. The video board of Rogers Centre has a total area of 0.00034 square kilometers.
It's about 250 times as big as a Polo field
The size of a Polo field is about 0.0501676416 square kilometers.
(for field polo) (United States Polo Association rules; unboarded side maximum)
An outdoor polo field must measure 274.32 m in length and 146.304 m to in width for a total playing area of up to 0.0501676416 square kilometers. Polo traces its origins to an Iranian (then Persian) war game from the 5th Century, which was played with as many as 100 players per side.
It's about 300 times as big as The Principality Stadium
The size of The Principality Stadium is about 0.04 square kilometers.
(a.k.a. Stadiwm Principality, f.k.a. Millennium Stadium, f.k.a. Stadiwm y Mileniwm) (Cardiff, Wales, United Kingdom) (total footprint)
The 70,000-person-plus capacity stadium of Cardiff, Principality Stadium has a total footprint of 0.04 square kilometers. Over 40,000 tonnes of concrete and steel during the construction of the stadium.
It's about 300 times as big as The Philippine Arena
The size of The Philippine Arena is about 0.04 square kilometers.
(Ciudad De Victoria, Bocaue - Bulacan, Philippines) (total footprint)
The largest indoor arena in the world, the multi-use Philippine Area has a total footprint of 0.04 square kilometers, with the dome itself occupying 0.036 square kilometers. The floor the arena contains over 9,000 tons of steel.
It's about one-three-hundredth as big as Rhode Island
The size of Rhode Island is about 4,001.660 square kilometers.
(a.k.a. The State of Rhode Island and Providence Plantations, a.k.a. RI) (United States)
The "Ocean State," Rhode Island measures 4,001.66 sq. km in total area. Several large bays totaling 2,706 sq. km make up 32.4% of its total area.
It's about 350 times as big as Federation Square
The size of Federation Square is about 0.038 square kilometers.
(Melbourne, Victoria, Australia)
Federation Square, the large public square in the city center of Melbourne, measures 0.038 square kilometers. The main portion of the square is floored with sandstone blocks from Western Australia.
It's about one-three-hundred-fiftieth as big as Kangaroo Island
The size of Kangaroo Island is about 4,405 square kilometers.
(a.k.a. Karta) (state of South Australia, Australia)
Kangaroo Island, off the southern coast of Australia, measures 4,405 sq. km in total area. The island is famous for its ligurian bee colonies, exporting over 100 tonnes of honey each year.
It's about one-three-hundred-fiftieth as big as Fort Bliss
The size of Fort Bliss is about 4,530 square kilometers.
(near Las Cruces, New Mexico and El Paso, Texas)
Fort Bliss is the United States Army's second-largest installation with a total area of 4,530 sq. km. It is known as the largest TRADOC (Training and Doctrine Command) site, the Army's largest maneuver area, and the country's largest contiguous tract of open airspace.